diff --git a/AWS/s3bucketsize.sh b/AWS/s3bucketsize.sh
new file mode 100644
index 0000000..515783c
--- /dev/null
+++ b/AWS/s3bucketsize.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+#Purpose: To Know S3 Bucket Size Shell Script
+#Version:1.0
+#Created Date: 09-Jan-2019
+#Modified Date:
+#WebSite: https://www.server-computer.com
+#Author: Ankam Ravi Kumar
+# START #
+echo -e "Please Enter your Bucket Name: \c"
+read -r BUCKETNAME
+aws s3api list-objects --bucket $BUCKETNAME --output json --query "[sum(Contents[].Size)]" > $PWD/s3bucket
+sed -i 's/\[//' $PWD/s3bucket
+sed -i 's/]//' $PWD/s3bucket
+sed -i 's/ //' $PWD/s3bucket
+cat $PWD/s3bucket |head -2 |tail -1 |awk '{print int($1/1024)" KB"}'
+cat $PWD/s3bucket |head -2 |tail -1 |awk '{print int($1/1024/1024)" MB"}'
+cat $PWD/s3bucket |head -2 |tail -1 |awk '{print int($1/1024/1024/1024)" GB"}'
+cat $PWD/s3bucket |head -2 |tail -1 |awk '{print int($1/1024/1024/1024/1024)" TB"}
diff --git a/Arthemetic-Operators.sh b/Arthemetic-Operators.sh
index b1c412a..0a29f3f 100644
--- a/Arthemetic-Operators.sh
+++ b/Arthemetic-Operators.sh
@@ -5,16 +5,17 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please enter some value: \c"
 read -r a
 echo -e "Please enter another value: \c"
 read -r b
 
-echo "a+b value is $(($a+$b))"
-echo "a-b value is $(($a-$b))"
-echo "axb value is $(($a*$b))"
-echo "a/b value is $(($a/$b))"
-echo "a%b value is $(($a%$b))"
+echo "a+b value is $(($a+$b))"    #it will add both the values
+echo "a-b value is $(($a-$b))"    #it will subtract b form a 
+echo "axb value is $(($a*$b))"    #it will multiply both a and b
+echo "a/b value is $(($a/$b))"    #it will divide b from a
+echo "a%b value is $(($a%$b))"    #it will give the remainder when a is divided by b
 
 echo "Completed successfully"
 
diff --git a/AutomateLoginSSH.sh b/AutomateLoginSSH.sh
new file mode 100644
index 0000000..2550268
--- /dev/null
+++ b/AutomateLoginSSH.sh
@@ -0,0 +1,20 @@
+#!/usr/bin/expect -f
+## Testing expect command
+
+## echo the test
+puts "\nGet HostName\n"
+
+## execute ssh command to connect to remote host
+spawn ssh 192.168.175.130 "hostname"
+
+## Look for password string
+expect "password:"
+
+## Send the password
+send "redhat\r"
+
+puts "\nGet df command output\n"
+spawn ssh 192.168.175.130 "df -h"
+expect "password:"
+send "redhat\r"
+interact
diff --git a/CpuMemDisk.sh b/CpuMemDisk.sh
new file mode 100644
index 0000000..441fe0c
--- /dev/null
+++ b/CpuMemDisk.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+## Collect Multiple Servers CPU, MEM and DISK Utilization and store in single file
+# Purpose: To Collect Multiple Servers CPU, MEM, DISK usage in single report
+# Version:1.0
+# Created Date: 2019-05-02
+# Modified Date:
+# WebSite: https://arkit.co.in
+# Author: Ankam Ravi Kumar
+
+HOSTNAME=$(hostname)
+DATET=$(date "+%Y-%m-%d %H:%M:%S")
+CPUUSAGE=$(top -b -n 2 -d1 | grep "Cpu(s)" | tail -n1 | awk '{print $2}' |awk -F. '{print $1}')
+MEMUSAGE=$(free | grep Mem | awk '{print $3/$2 * 100.0}')
+DISKUSAGE=$(df -h / | awk '{print $5}' |tail -n 1 |sed 's/%//g')
+
+echo 'HostName, Date&Time, CPU(%), MEM(%), DISK(%)' >> /opt/usagereport
+echo "$HOSTNAME, $DATET, $CPUUSAGE, $MEMUSAGE, $DISKUSAGE" >> /opt/usagereport
+
+for i in `cat /scripts/hostlist`
+do
+RHOST=$(ssh $i hostname)
+RDATET=$(ssh $i 'date "+%Y-%m-%d %H:%M:%S"')
+RCPUUSAGE=$(ssh $i top -b -n 2 -d1 | grep "Cpu(s)" | tail -n1 | awk '{print $2}' |awk -F. '{print $1}')
+RMEMUSAGE=$(ssh $i free | grep Mem | awk '{print $3/$2 * 100.0}')
+RDISKUSAGE=$(ssh $i df -P / |column -t | awk '{print $5}' |tail -n 1 |sed 's/%//g')
+
+echo "$RHOST, $RDATET, $RCPUUSAGE, $RMEMUSAGE, $RDISKUSAGE" >> /opt/usagereport
+done
diff --git a/Even_or_Odd_Number.sh b/Even_or_Odd_Number.sh
new file mode 100644
index 0000000..a8294a1
--- /dev/null
+++ b/Even_or_Odd_Number.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+## To find given number is Even number or Odd Number
+
+read -p "Enter a number: " number
+
+if [ $((number % 2)) -eq 0 ]; then
+    echo "$number is an even number."
+else
+    echo "$number is an odd number."
+fi
diff --git a/ExamResults.sh b/ExamResults.sh
new file mode 100644
index 0000000..b718bdf
--- /dev/null
+++ b/ExamResults.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+#Purpose: Validate and report Student subject marks
+#Version:1.0
+#Created Date: 2024 sep
+#Modified Date:
+#Author: Ankam Ravi Kumar
+# START #
+
+echo -e "Please Enter Maths Marks: \c"
+read -r m
+echo -e "Please Enter Physics Marks: \c"
+read -r p
+echo -e "Please Enter Chemistry Marks: \c"
+read -r c
+
+if [ $m -ge 35 -a $p -ge 35 -a $c -ge 35 ]; then
+total=`expr $m + $p + $c`
+avg=`expr $total / 3`
+echo "Total Marks = $total"
+echo "Average Marks = $avg"
+      if [ $avg -ge 75 ]; then
+      echo "Congrats you got Distinction"
+      elif [ $avg -ge 60 -a $avg -lt 75 ]; then
+      echo "Congrats you got First Class"
+      elif [ $avg -ge 50 -a $avg -lt 60 ]; then
+      echo "You got second class"
+      elif [ $avg -ge 35 -a $avg -lt 50 ]; then
+      echo "You Got Third Class"
+      fi
+else
+echo "Sorry You Failed"
+fi
+
+# END #
diff --git a/README.md b/README.md
index 343b38a..fff2db0 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,21 @@
-# shell-scripting-tutorial
+# Shell Scripting Tutorial
+
+Keep in touch with for any kind of technical questions 
+
+[Shell Scripting for Amazon Web Services to Manage it's resources](https://github.com/techtutorials/shell-scripting-tutorial/tree/FOTV/AWS)
+
+https://techtutorials.github.io/shell-scripting-tutorial/
+
+* [Facebook](https://www.facebook.com/Linuxarkit/)
+* [Email List](https://feedburner.google.com/fb/a/mailverify?uri=arkit)
+* [Linkedin](https://in.linkedin.com/in/ravi-kumar-94530121)
+* [Twitter](https://twitter.com/aravikumar48)
+* [Youtube](https://www.youtube.com/Techarkit?sub_confirmation=1)
+* [Email Address](aravikumar48@gmail.com)
+* [WhatsApp Group](http://bit.ly/wappg)
+* [Linux Telegram Group](http://bit.ly/linux-telegram)
+* [Reddit TechTutorials](http://bit.ly/redditark)
+* [Tumblr](https://www.tumblr.com/blog/aravikumar48)
 
 A complete begineers guide to learn shell scripting from scratch which includes Videos, Practice scenarios and project idea. I will create one file for one topic with code.
 
@@ -12,102 +29,87 @@ alias and unalias, arch, arp, at, awk, bc, blkid, cal, cat, cd, chage, chattr, c
 
 After that start learning shell scripting using below topics
 
-[Shell Scripting Video Tutorial](https://www.youtube.com/watch?v=7GNUzvjS_mE&list=PL8cE5Nxf6M6b8qW7CSMsdKbEsPdG9pWfu)
-
-Difference between scripting and programming
-
-What is shell scripting and it's advantages
-
-PATH environment variable
-
-What is sub-shell
-
-[Make Shell Script Template](https://www.youtube.com/watch?v=7KEQJ7jtkTg)
-
-[Quotes single, double and reverse - Know difference between each](https://www.youtube.com/watch?v=9_fhRI-dos4)
-
-Grab User input and Print - Using read command
-
-Bash colors
-
-Script exit status
-
-[Variables and it's rules](https://www.youtube.com/watch?v=839s_OtTqDA)
-
-[Special Variables](https://www.youtube.com/watch?v=PfxzX4XNYRE)
-
-Environment Variables, system variables and user defined variables
-
-Constant variables, Local & Global variables and Special variables
-
-Positional Parameters
-
-[Count number command line arguments $#](https://www.youtube.com/watch?v=YizjrX9ph10)
-
-[Arithmetic Operators](https://www.youtube.com/watch?v=qxNQ_D8txPo)
-
-[Relational Operators](https://www.youtube.com/watch?v=U-u1wx5VeTU)
-
-Relational ASCII operators
-
-[LogicalOperators](https://www.youtube.com/watch?v=m_F1FTKdUU4)
-
-Assignment Operators
-
-Boolean Operators
-
-Redirecting Input, output and errors
-
-Maths using expr command
-
-Real maths using bc command
-
-Do mathametics using let command
-
-Escape sequence
-
-[if statement](https://www.youtube.com/watch?v=gncu9vzmILw)
-
-[if-else statement](https://www.youtube.com/watch?v=nDhbOeEQeNY)
-
-[if-else-if statement](https://www.youtube.com/watch?v=UJET-9cmaqU)
-
-Nested if statement
-
-Case statement
-
-For Loop
-
-While Loop
-
-Until Loop
-
-Break, sleep, continue and Exit
-
-Functions
-
-Arrays
-
-Eval command
-
-Shifting parameters using shift command
-
-Tput making menu's
-
-Executing Multiple scripts from single script
-
-$(()) - Pass command to sub-shell
-
-logger logging messages to log file
-
-IFS - Input Field Separator
-
-Exec to send input to terminal
-
-Writing CPU Usage script
-
-Writing Disk Utilization script
-
-Trouble shooting debugging shell scripts
-
-Checking shell script errors and improvements using shellcheck.net site
+- [Shell Scripting Video Tutorial](https://www.youtube.com/watch?v=7GNUzvjS_mE&list=PL8cE5Nxf6M6b8qW7CSMsdKbEsPdG9pWfu)
+- [Shell Scripting course Overview](https://www.youtube.com/watch?v=7GNUzvjS_mE)
+- [Linux Basics](https://www.youtube.com/watch?v=IFvMor-0eFM)
+- [Linux Directory Structure](https://www.youtube.com/watch?v=rVxpe1_lNFE)
+- [Linux Basic Commands](https://www.youtube.com/watch?v=yYC8aaQ3eZA)
+- [Copy, Remove, Move and Time Commands](https://www.youtube.com/watch?v=G7XFreQkDB8)
+- [Dif and Grep Commands](https://www.youtube.com/watch?v=RwcQ6JzTsmA)
+- [Head, tail, sort and more commands](https://www.youtube.com/watch?v=OgV3qrPQulU)
+- [tr and wc commands](https://www.youtube.com/watch?v=d40a5zFa8yI)
+- [Disk utilities like fdisk, df and du commands](https://www.youtube.com/watch?v=vx1WZepOmKg)
+- [Getting Help From Command Line user Interface](https://www.youtube.com/watch?v=GcYu-0IIJas)
+- [w, who, hostnamem hostnamectl and uname commands](https://www.youtube.com/watch?v=7shAr5lp_Wc)
+- [Search for files and directories using find and locate commands](https://www.youtube.com/watch?v=Rd6e-OrsHpo)
+- [top command its output explanation](https://www.youtube.com/watch?v=UQ7rr4_47YY)
+- [vi & vim text editor](https://www.youtube.com/watch?v=K3SUrcJ740Y)
+- [sed, awk, vmstat and nestat commands](https://www.youtube.com/watch?v=4hJorSKg9E0)
+- [vnstat command](https://www.youtube.com/watch?v=KlpE2Ok6Bxo)
+- [Introduction to Graphical user interface](https://www.youtube.com/watch?v=Yck_xhz9ku0)
+- [cut command](https://www.youtube.com/watch?v=kBZNJdw7RQQ)
+- [Merge multiple files using paste command](https://www.youtube.com/watch?v=_Efd6PxhNq4)
+- [Connect and Manage remote machine using SSH](https://www.youtube.com/watch?v=Dp9J7aktYDs)
+- [Changing files and directory permissions](https://www.youtube.com/watch?v=NNAxqSyTsUI)
+- [tar and zip commands](https://www.youtube.com/watch?v=lVQppyhgERA)
+- [Scheduling future jobs using crontab](https://www.youtube.com/watch?v=OOOabNTnSwY)
+- [difference between scripting and programming](https://www.youtube.com/watch?v=5UuTNosxNgI)
+- [what is shell scripting and it's advantages](https://www.youtube.com/watch?v=m2DvuF_S4Ac)
+- [PATH environment variable](https://www.youtube.com/watch?v=4TZyWegxzGY)
+- [Symbols used shell scripting](https://www.youtube.com/watch?v=L8IxV7bvBHU)
+- [Make Shell Script Template](https://www.youtube.com/watch?v=7KEQJ7jtkTg)
+- [Quotes single, double and reverse - Know difference between each](https://www.youtube.com/watch?v=9_fhRI-dos4)
+- [Bash colors](https://arkit.co.in/coloring-style-text-shell-scripting/)
+- [Script exit status](https://arkit.co.in/shell-scripting-exit-status-shell-scripting-return-codes/)
+- [Variables and it's rules](https://www.youtube.com/watch?v=839s_OtTqDA)
+- [Special Variables](https://www.youtube.com/watch?v=PfxzX4XNYRE)
+- [Environment Variables, system variables and user defined variables](https://www.youtube.com/watch?v=PfxzX4XNYRE)
+- [Constant variables, Local & Global variables and Special variables](https://www.youtube.com/watch?v=839s_OtTqDA)
+- [Positional Parameters](https://www.youtube.com/watch?v=PfxzX4XNYRE)
+- [Count number command line arguments $#](https://www.youtube.com/watch?v=YizjrX9ph10)
+- [Arithmetic Operators](https://www.youtube.com/watch?v=qxNQ_D8txPo)
+- [Relational Operators](https://www.youtube.com/watch?v=U-u1wx5VeTU)
+- [LogicalOperators](https://www.youtube.com/watch?v=m_F1FTKdUU4)
+- [Boolean Operators](https://www.youtube.com/watch?v=U-u1wx5VeTU)
+- [Maths using expr command](https://www.youtube.com/watch?v=qxNQ_D8txPo)
+- [Real maths using bc command](https://www.youtube.com/watch?v=qxNQ_D8txPo)
+- [if statement](https://www.youtube.com/watch?v=gncu9vzmILw)
+- [if-else statement](https://www.youtube.com/watch?v=nDhbOeEQeNY)
+- [if-else-if statement](https://www.youtube.com/watch?v=UJET-9cmaqU)
+- [Nested if statement](https://www.youtube.com/watch?v=Kd1SJFnmj9k)
+- [Case statement](https://www.youtube.com/watch?v=JJ7mAPU0KhI)
+- [For Loop](https://www.youtube.com/watch?v=1fnAUUS4qg0)
+- [While Loop](https://www.youtube.com/watch?v=nBMuVIRGpwY)
+- [Until Loop](https://www.youtube.com/watch?v=zdk795qFgWk)
+- [Functions](https://www.youtube.com/watch?v=jXv1otUXMG4)
+- [Arrays](https://www.youtube.com/watch?v=2Fetj2V6rrM)
+- [Eval command](https://www.youtube.com/watch?v=AjqBRGwLmLc&list=PL8cE5Nxf6M6b8qW7CSMsdKbEsPdG9pWfu&index=57&t=0s)
+- [Shifting parameters using shift command](https://www.youtube.com/watch?v=48j0kxOFKZE)
+- [IFS - Input Field Separator](https://www.youtube.com/watch?v=so8IRuhWjEM)
+- [Writing CPU Usage script](https://www.youtube.com/watch?v=NQx43bY4lNo)
+- [Writing Disk Utilization script](https://www.youtube.com/watch?v=yXhdDV13nrA)
+- [Trouble shooting debugging shell scripts](https://www.youtube.com/watch?v=kgj-4_gmvi4)
+- [Checking shell script errors and improvements using shellcheck.net site](https://www.youtube.com/watch?v=kgj-4_gmvi4)
+- [Here Document to write paragraphs of text](https://www.youtube.com/watch?v=r9lb0ZxGFqE)
+- [Getopts Function](https://www.youtube.com/watch?v=j-lEoC0DWI8)
+- [Executing Multiple scripts from single script](https://youtu.be/hs-FK681D50)
+- [logger logging messages to log file](https://youtu.be/_kMXvtn1RRQ)
+
+**Resource to Download**
+
+- [Shell Scripting Book](https://arkit-in.tradepub.com/free/w_wile48/)
+- [Shell Scripting Book](https://arkit-in.tradepub.com/free/w_pack42/)
+- [Shell Scripting Book](https://arkit-in.tradepub.com/free/w_advb01/)
+- [Shell Scripting Book](https://arkit-in.tradepub.com/free/w_wile54/)
+
+**Write Your Own Method of Script for below Scenario**
+
+- **Scenario:** Everyday from Monday to Friday one directory will be created under /fullbackup/dailybackup/YYYY-MM-DD and it will move backup to its parent directory everyday midnight /fullbackup/archive/, However Saturday, Sunday and Monday directories will move to /fullbackup/archive path every monday evening.
+
+- **Directory Names Example:** 2018-12-24 2018-12-25 2018-12-26 2018-12-27 2018-12-28
+
+- **Question:** I would like to delete directories older than two days from /fullbackup/archive path. How do you do it using any scripting methods.
+
+- **Problem Statement:** I was trying to use ```find /path/ -type d -mtime +2 -print0 | xargs -r0 rm --```. This command does not work as expected due to directory modified date for SAT, SUN and MON moved directories same for all as Monday date.
+
+- **How Do you solve it.??** Write Shell Script to accomplish this task. Should run through crontab and clear directories older than two days.
diff --git a/add.sh b/add.sh
new file mode 100644
index 0000000..8909fed
--- /dev/null
+++ b/add.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+##################################################
+# Purpose: eval command Evaluating twice
+# Version:1.0
+# Created Date: Wed Jun 13 22:09:59 IST 2018
+# Modified Date:
+# WebSite: https://arkit.co.in
+# Author: Ankam Ravi Kumar
+##################################################
+# START #
+
+echo "addition of X+Y"
+echo "Enter X"
+read X
+echo "Enter Y"
+read Y
+echo "X+Y = $X+$Y = $[ X+Y ]"
+
+# END #
diff --git a/agtb.sh b/agtb.sh
new file mode 100644
index 0000000..0a67093
--- /dev/null
+++ b/agtb.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo -e "enter the a value: \c"
+read a
+echo -e "enter the b value: \c"
+read b
+if test "$a" -gt "$b" ; then
+        echo "$a is greater than $b"
+else
+        echo "$b is greater than $a"
+fi
+
+# END #
\ No newline at end of file
diff --git a/answers.sh b/answers.sh
new file mode 100644
index 0000000..697f19b
--- /dev/null
+++ b/answers.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/expect
+
+set timeout -1
+
+spawn ./questions.sh
+expect "Hi\r"
+send -- "Hi\r"
+
+expect "How are you?\r"
+send -- "I am fine\r"
+
+expect "Whats your Name?\r"
+send -- "My name is Ravi\r"
+
+expect eof
diff --git a/array.sh b/array.sh
new file mode 100644
index 0000000..7c61603
--- /dev/null
+++ b/array.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#Purpose: Array Example
+#Version:1.0
+#Created Date: Mon May 28 22:59:22 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+fruits=( "Apple" "Orange" "Banana" "Sapota" )
+fruits[3]='Green Apple'
+for fruit in ${fruits[@]}
+do
+        echo "Fruit Name is $fruit"
+done
+
+echo "Number of Fruits in Bucket is" ${#fruits[@]}
+echo "All Fruits ${fruits[@]}"
+
+# END #
diff --git a/casestatement.sh b/casestatement.sh
new file mode 100644
index 0000000..e68b229
--- /dev/null
+++ b/casestatement.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+#Purpose: Example for Case Statement
+#Version:1.0
+#WebSite: https://arkit.co.in
+#Created Date: Mon May 21 20:37:59 IST 2018
+#Modified Date:
+#Author: Ankam Ravi Kumar
+# START #
+echo -e "Enter a number: \c"
+read -r a
+echo -e "Enter b number: \c"
+read -r b
+
+echo "1. Sum of values"
+echo "2. Substraction"
+echo "3. Multiplication"
+echo "4. Division"
+echo "5. Modulo division"
+echo -e "Enter Your Choice from above menu: \c"
+read -r ch
+case $ch in
+1) echo "Sum of $a + $b = "`expr $a + $b`;;
+2) echo "Subsctraction = "`expr $a - $b`;;
+3) echo "Multiplication = "`expr $a \* $b`;;
+4) echo "Division = "`expr $a / $b`;;
+5) echo "Modulo Division = "`expr $a % $b`;;
+*) echo "Invalid Option provided"
+esac
+# END #
diff --git a/collectroothistory.sh b/collectroothistory.sh
new file mode 100644
index 0000000..6e0c9e1
--- /dev/null
+++ b/collectroothistory.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+## Collect Root Commands History
+
+# Mailing List
+MAILLIST="YOUREMAIL@DOMAIN"
+
+# Log path
+AUDLOG="/rootcommands"
+
+cp /root/.bash_history /tmp/history
+sed -i 's/#//g' /tmp/history
+for i in `cat /tmp/history |grep ^[0-9]`
+do
+CONVT=`date -d @$i`
+sed -i "s/$i/$CONVT/g" /tmp/history
+done
+
+sed -i 'N;s/\n/ /' /tmp/history
+sleep 10
+
+/bin/touch ${AUDLOG}$HOSTNAME-root-hist.log.`date +%h%d%y`
+/bin/grep "$DATE" /tmp/history > ${AUDLOG}$HOSTNAME-root-hist.log.`date +%h%d%y`
+/bin/chmod 0440 ${AUDLOG}$HOSTNAME-root-hist.log.`date +%h%d%y`
+
+# Mail notification
+/bin/cat ${AUDLOG}$HOSTNAME-root-hist.log.`date +%h%d%y` |mail -s "HOST: $HOSTNAME - `whoami` Daily root Commands Log" ${MAILLIST}
diff --git a/continue.sh b/continue.sh
new file mode 100644
index 0000000..ee5694e
--- /dev/null
+++ b/continue.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+#Purpose: While loop Continue Statement
+#Version:1.0
+#Website: https://arkit.co.in
+#Created Date: Tue May 22 22:03:02 IST 2018
+#Modified Date:
+#Author: Ankam Ravi Kumar
+# START #
+opt=y
+while [ $opt = y -o $opt = Y ]
+do
+echo -e "Please enter the number: \c"
+read -r num
+if [ $num -le 50 ]; then
+sq=`expr $num \* $num`
+echo "Square of provided number $num: $sq"
+else
+echo "Number not in the given Range"
+fi
+
+echo -e "Do you want to continue [y/n]: \c"
+read -r wish
+if [ $wish = y -o $wish = Y ]; then
+continue
+else
+echo "Thank You for Exiting.."
+exit
+fi
+done
+
+# END #
diff --git a/convert_and_update_mysql.sh b/convert_and_update_mysql.sh
new file mode 100644
index 0000000..98f4d25
--- /dev/null
+++ b/convert_and_update_mysql.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+n=1
+until [ $n -gt 11196 ]
+do
+EXIRECORDS=$(mysql -u root -pPASSWORD -h 192.168.2.100 -e "SELECT sn,tarsize from DATABASE.Table1 where sn='"$n"'" |tail -n1 |grep $n)
+
+RECORDNUMBER=$(echo $EXIRECORDS |awk '{print $1}')
+FOLDERSIZE=$(echo $EXIRECORDS |awk '{print $2}')
+
+KB=$(echo $EXIRECORDS |awk '{print $2}' |grep K |wc -l)
+        if [ $KB -ge 1 ]; then
+                K=$(echo $EXIRECORDS |awk '{print $2}' |sed 's/K//g')
+                BYTES=$($K * 1024 |bc |awk -F. '{print $1}')
+                mysql -u root -pPASSWORD -h 192.168.2.100 -e "UPDATE DATABASE.Table1 SET tarsize='"$BYTES"' where sn='"$RECORDNUMBER"'"
+        fi
+
+MB=$(echo $EXIRECORDS |awk '{print $2}' |grep M |wc -l)
+        if [ $MB -ge 1 ]; then
+                M=$(echo $EXIRECORDS |awk '{print $2}' |sed 's/M//g')
+                BYTES=$(echo $M*1024*1024 |bc |awk -F. '{print $1}')
+                mysql -u root -pPASSWORD -h 192.168.2.100 -e "UPDATE DATABASE.Table1 SET tarsize='"$BYTES"' where sn='"$RECORDNUMBER"'"
+        fi
+
+GB=$(echo $EXIRECORDS |awk '{print $2}' |grep G |wc -l)
+        if [ $GB -ge 1 ]; then
+                G=$(echo $EXIRECORDS |awk '{print $2}' |sed 's/G//g')
+                BYTES=$(echo $G*1024*1024*1024 |bc |awk -F. '{print $1}')
+                mysql -u root -pPASSWORD -h 192.168.2.100 -e "UPDATE DATABASE.Table1 SET tarsize='"$BYTES"' where sn='"$RECORDNUMBER"'"
+        fi
+
+TB=$(echo $EXIRECORDS |awk '{print $2}' |grep T |wc -l)
+        if [ $TB -ge 1 ]; then
+                T=$(echo $EXIRECORDS |awk '{print $2}' |sed 's/T//g')
+                BYTES=$(echo $T*1024*1024*1024*1024 |bc |awk -F. '{print $1}')
+                mysql -u root -pPASSWORD -h 192.168.2.100 -e "UPDATE DATABASE.Table1 SET tarsize='"$BYTES"' where sn='"$RECORDNUMBER"'"
+        fi
+
+
+n=`expr "$n" + 1`
+
+done
diff --git a/countargs.sh b/countargs.sh
index 8b63dc5..e25e305 100644
--- a/countargs.sh
+++ b/countargs.sh
@@ -1,15 +1,17 @@
 #!/bin/bash
-#Purpose: Counting given postional parameters.
-#Version:1.0
-#Created Date: Mon May 7 21:55:05 IST 2018
-#Modified Date:
-#Author: Ankam Ravi Kumar
+##################################################
+# Purpose: Counting given postional parameters.
+# Version:1.0
+# Created Date: Mon May 7 21:55:05 IST 2018
+# Modified Date:
+# Author: Ankam Ravi Kumar
+##################################################
+
 # START #
-#echo "Your current given parameters are $#"
+echo "Your current given parameters are $#"
 if [ $# -lt 1 ];then
 echo "Program Usage is './scriptname.sh' options"
 else
 echo "Program executed successfully"
 fi
-
 # END #
diff --git a/cpualert.sh b/cpualert.sh
new file mode 100644
index 0000000..a5c6b13
--- /dev/null
+++ b/cpualert.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+#Purpose: Real time CPU utilization Monitoring
+#Version:1.0
+#Created Date: Tue Jun 5 21:33:38 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+PATHS="/"
+HOSTNAME=$(hostname)
+CRITICAL=98
+WARNING=90
+CRITICALMail="YOUREMAILaddresS@Domain.com"
+MAILWAR="YOUREMAIL@Domain.in"
+mkdir -p /var/log/cputilhist
+LOGFILE=/var/log/cputilhist/cpusage-`date +%h%d%y`.log
+
+touch $LOGFILE
+
+for path in $PATHS
+do
+        CPULOAD=`top -b -n 2 -d1 | grep "Cpu(s)" | tail -n1 | awk '{print $2}' |awk -F. '{print $1}'`
+if [ -n $WARNING -a -n $CRITICAL ]; then
+if [ "$CPULOAD" -ge "$WARNING" -a "$CPULOAD" -lt "$CRITICAL" ]; then
+echo "`date "+%F %H:%M:%S"` WARNING - $CPULOAD on Host $HOSTNAME" >> $LOGFILE
+echo "Warning Cpuload $CPULOAD Host is $HOSTNAME" | mail -s "CPULOAD is Warning" $MAILWAR
+exit 1
+elif [ "$CPULOAD" -ge "$CRITICAL" ]; then
+echo "`date "+%F %H:%M:%S"` CRITICAL - $CPULOAD on Host $HOSTNAME" >> $LOGFILE
+echo "CRITICAL Cpuload $CPULOAD Host is $HOSTNAME" | mail -s "CPULOAD is CRITICAL" $CRITICALMail
+exit 2
+else
+echo "`date "+%F %H:%M:%S"` OK - $CPULOAD on $HOSTNAME" >> $LOGFILE
+exit 0
+fi
+fi
+done
+
+# END #
diff --git a/details.sh b/details.sh
new file mode 100644
index 0000000..cf701a3
--- /dev/null
+++ b/details.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "WEL COME TO $USERNAME"
+echo "Your present working directory is `pwd`"
+echo "current logged in users are `who`"
+echo "Today date is `date`"
+
+# END #
diff --git a/diskover-2.1.1.zip b/diskover-2.1.1.zip
new file mode 100644
index 0000000..8bf687f
Binary files /dev/null and b/diskover-2.1.1.zip differ
diff --git a/diskspace.sh b/diskspace.sh
new file mode 100644
index 0000000..f1de88f
--- /dev/null
+++ b/diskspace.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+#Purpose: Monitoring Disk Space Utilization and Send Email Alert
+#Version:1.0
+#Created Date: Wed Jun 6 22:38:01 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+THRESHOULD=40
+mailto="root"
+HOSTNAME=$(hostname)
+
+for path in `/bin/df -h | grep -vE 'Filesystem|tmpfs' | awk '{print $5}' |sed 's/%//g'`
+do
+        if [ $path -ge $THRESHOULD ]; then
+        df -h | grep $path% >> /tmp/temp
+        fi
+done
+
+VALUE=`cat /tmp/temp | wc -l`
+        if [ $VALUE -ge 1 ]; then
+        mail -s "$HOSTNAME Disk Usage is Critical" $mailto < /tmp/temp
+        fi
+
+#rm -rf /tmp/temp
+
+
+# END #
diff --git a/echo.sh b/echo.sh
new file mode 100644
index 0000000..f8e8f8c
--- /dev/null
+++ b/echo.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "current location files are `ls`"
+echo "current working directory is `pwd`"
+
+# END #
diff --git a/eval.sh b/eval.sh
new file mode 100644
index 0000000..1d9bcf1
--- /dev/null
+++ b/eval.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+COMMAND="ls -ltr /etc"
+echo "$COMMAND"
+eval $COMMAND
+# END #
diff --git a/extract.sh b/extract.sh
new file mode 100644
index 0000000..f4378dc
--- /dev/null
+++ b/extract.sh
@@ -0,0 +1,30 @@
+for C in -aes-256-ctr -aes-256-cbc
+do
+  echo "===== CIPHER $C ====="
+  for o in \
+    "-md md5 -kfile /secure/pwd.txt" \
+    "-md sha256 -kfile /secure/pwd.txt" \
+    "-pbkdf2 -pass file:/secure/pwd.txt" \
+    "-pbkdf2 -md sha256 -pass file:/secure/pwd.txt"
+  do
+    echo "=== Trying: $C $o"
+    openssl enc -d $C $o -bufsize 8388608 \
+      -in TARFILENAME.tar -out dec.gz 2>/dev/null
+    head -c 2 dec.gz | xxd
+    file dec.gz | head -n 1
+  done
+done
+
+
+for o in \
+  "-md md5 -kfile /secure/pwd.txt" \
+  "-md sha256 -kfile /secure/pwd.txt" \
+  "-pbkdf2 -pass file:/secure/pwd.txt" \
+  "-pbkdf2 -md sha256 -pass file:/secure/pwd.txt"
+do
+  echo "=== Trying: $o"
+  openssl enc -d -aes-256-ctr $o -bufsize 8388608 \
+    -in TARFILENAME.tar -out /tmp/dec.gz 2>/dev/null
+  head -c 2 /tmp/dec.gz | xxd
+  file /tmp/dec.gz | head -n 1
+done
diff --git a/for-loop.sh b/for-loop.sh
index d399c5f..d431716 100644
--- a/for-loop.sh
+++ b/for-loop.sh
@@ -6,14 +6,14 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
-for i in `cat hostfile`
+for server in `cat /scripts/servers`
 do
-ping -c 1 $i > /tmp/pingresults
+ping -c 1 $server > /tmp/ping
 valid=`echo $?`
-if [ $valid -gt 1 ]; then
-echo "$i Host is not reachable"
+if [ $valid -eq 0 ]; then
+echo "$server is up"
 else
-echo "$i Host is Up"
+echo "$server is Down"
 fi
 done
 # END #
diff --git a/1forloop.sh b/forloop.sh
similarity index 100%
rename from 1forloop.sh
rename to forloop.sh
diff --git a/function.sh b/function.sh
new file mode 100644
index 0000000..48dbf17
--- /dev/null
+++ b/function.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+#Purpose: Function example. Taking Backup of Particular File
+#Version:1.0
+#Created Date: 2024 Sep 21
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+
+# START #
+function takebackup (){
+        if [ -f $1 ]; then
+        BACKUP="/home/aravi/$(basename ${1}).$(date +%F).$$"
+        echo "Backing up $1 to ${BACKUP}"
+        cp $1 $BACKUP
+        fi
+}
+
+takebackup /etc/hosts
+        if [ $? -eq 0 ]; then
+        echo "BAckup Success"
+        fi
+function testing (){
+echo "Just TEsting Function"
+}
+
+testing
+# END #
diff --git a/functions.sh b/functions.sh
new file mode 100644
index 0000000..61e1a95
--- /dev/null
+++ b/functions.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+#Purpose: Example for Functions
+#Version:1.0
+#Created Date: Sat May 26 00:17:19 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+function takebackup (){
+        if [ -f $1 ]; then
+        BACKUP="/tmp/$(basename ${1}).$(date +%F).$$"
+        echo "Backing up $1 to ${BACKUP}"
+        cp $1 $BACKUP
+        fi
+}
+
+takebackup /etc/hosts
+        if [ $? -eq 0 ]; then
+        echo "Backup Success"
+fi
+# END #
diff --git a/generate_win_host_config.sh b/generate_win_host_config.sh
new file mode 100644
index 0000000..cc6259e
--- /dev/null
+++ b/generate_win_host_config.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+## Purpose: To Generate Nagios Configuration files within minute of time.
+## Author: Ankam Ravi Kumar
+
+mkdir -p /scripts/WinServers
+cat  /scripts/serverlist.txt | while read LINE
+do
+    HostIP=`echo $LINE | cut -d, -f1`
+    HostName=`echo $LINE | cut -d, -f2`
+
+NSCLIENTSTATE=$(/usr/local/nagios/libexec/check_nt -H $HostIP -p 12489 -v CLIENTVERSION -s Password | echo $?)
+if [ $NSCLIENTSTATE -eq 0 ]; then
+    sed -e "s/XXXX/$HostName/g; s/ZZZZ/$HostIP/g" /scripts/Template-Windows.cfg > /scripts/WinServers/$HostName.cfg
+
+for i in D E F G H I J K L M N O P Q R S T U V W X Y Z;
+do
+/usr/local/nagios/libexec/check_nt -H $HostIP -p 12489 -v USEDDISKSPACE -s Password -l $i -w 90 -c 95
+COMMANDSTATUS=$(echo $?)
+if [ $COMMANDSTATUS -eq 0 ] || [ $COMMANDSTATUS -eq 2 ];then
+sed -e "s/XXXX/$HostName/g; s/ZZZZ/$i/g" /scripts/Drives.cfg >> /scripts/WinServers/$HostName.cfg
+fi
+done
+fi
+done
diff --git a/getopts.sh b/getopts.sh
new file mode 100644
index 0000000..4028ba9
--- /dev/null
+++ b/getopts.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#Purpose: Getopts Examples working with arguments
+#Version:1.0
+#Created Date: Wed May 30 22:30:51 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+while getopts :a:b: options; do
+        case $options in
+                a) ap=$OPTARG;;
+                b) bo=$OPTARG;;
+                ?) echo "I Dont know What is $OPTARG is"
+        esac
+done
+
+echo "Option A = $ap and Option B = $bo"
+
+# END #
diff --git a/heredoc.sh b/heredoc.sh
new file mode 100644
index 0000000..2f9a966
--- /dev/null
+++ b/heredoc.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+#Purpose: Here Document Example
+#Version:1.0
+#Created Date: Tue Jun 12 22:50:23 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+ftp -n <<- EOF 2> /dev/null
+        open ftp.server.com
+        user ftp ftp
+        ascii
+        cd uploadfolder
+        mput file1 file1 file2
+        bye
+EOF
+
diff --git a/hi.sh b/hi.sh
new file mode 100644
index 0000000..6652c64
--- /dev/null
+++ b/hi.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+tmp=`date | cut -c12-13`
+if [ $tmp -lt 11 ] ; then
+echo "Good Mornind have a nice day $USERNAME"
+elif [ $tmp -gt 11 -a $tmp -lt 16 ] ; then
+echo "Good Ofter noon $USERNAME"
+elif [ $tmp -gt 15 -a $tmp -lt 19 ] ; then
+echo "Good Evening $USERNAME"
+else 
+echo "Good Night Sweet dreams $USERNAME"
+fi
+echo "Now the time is `date |cut -c12-19`"
+
+# END #
diff --git a/if-elif-if.sh b/if-elif-if.sh
index ee2e09b..da88e28 100644
--- a/if-elif-if.sh
+++ b/if-elif-if.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please Enter a Value: \c"
 read -r a
 echo -e "Please Enter b Value: \c"
diff --git a/if-else-statement.sh b/if-else-statement.sh
index 1393446..7e5b04f 100644
--- a/if-else-statement.sh
+++ b/if-else-statement.sh
@@ -6,7 +6,7 @@
 #Website: https://arkit.co.in
 #Author: Ankam Ravi Kumar
 # START #
-echo -e "Enter any value> \c"
+echo -e "Enter any value: \c"
 read -r a
 echo -e "Enter any value: \c"
 read -r b
diff --git a/ifs.sh b/ifs.sh
new file mode 100644
index 0000000..9663330
--- /dev/null
+++ b/ifs.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#Purpose: Internal Field Seperator
+#Version:1.0
+#Created Date: Wed Jun 13 21:58:18 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+LINE=`cat /etc/passwd |grep $1`
+IFS=:
+set $LINE
+echo "User Name = $1"
+echo "Password = $2"
+echo "UID = $3"
+echo "GID = $4"
+echo "Description = $5"
+echo "Home Directory = $6 "
+echo " Current Shell = $7"
+
+# END #
diff --git a/info.sh b/info.sh
new file mode 100644
index 0000000..caac61a
--- /dev/null
+++ b/info.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "Hi you there"
+echo "what is your name? (Type your name here and press Enter)"
+read NM
+echo "Hi $NM Good Morning"
+echo "your currently logged in as $USERNAME"
+echo "your present working directory is `pwd`"
+
+# END #
diff --git a/memusage.sh b/memusage.sh
new file mode 100644
index 0000000..45187ca
--- /dev/null
+++ b/memusage.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+## Monitoring Memory usage of the server
+# Version:1.0
+# Created Date: 2022-Jan-07
+# WebSite: https://arkit.co.in
+# Author: Ankam Ravi Kumar
+
+HOSTNAME=$(hostname)
+DATED=$(date "+%Y-%m-%d %H:%M:%S")
+THRESHOLD=80
+TOADDRESS=aravikumar48@gmail.com
+
+MEMUSAGE=$(free | grep Mem | awk '{print $3/$2 * 100.0}' |awk -F. '{print $1}')
+if [ $MEMUSAGE -ge $THRESHOLD ]; then
+echo "$HOSTNAME, $DATED, %MEMUSAGE" >> /var/log/memusage_history
+echo "$HOSTNAME, $DATED, %MEMUSAGE" > /tmp/memusage
+mail -s "$HOSTNAME $DATED Mem Usage: $MEMUSAGE" $TOADDRESS <<< /tmp/memusage
+fi
diff --git a/morethanxdays.sh b/morethanxdays.sh
new file mode 100644
index 0000000..2a89a07
--- /dev/null
+++ b/morethanxdays.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+## Delete the Directories older than 2 days based on directory name validation
+## Refer YouTube Link for Explanation https://youtu.be/1Sh6PWcgXAA
+ls -ltr /fullbackup/archive/ | awk '{print $9}' > /scripts/dirs
+for i in `cat /scripts/dirs`; do
+STARTTIME=$(date +%s -d"$i 00:00:00")
+ENDTIME=$(date +%s)
+echo $((ENDTIME-STARTTIME)) | awk '{print int($1/60)}' > /scripts/value
+COUNT=`cat /scripts/value`
+if [ $COUNT -gt 2880 ]; then
+echo "Directories are older than 2days $i" >> /scripts/joblog
+rm -rf /fullbackup/archive/$i
+fi
+done
diff --git a/multiplication.sh b/multiplication.sh
new file mode 100644
index 0000000..b135a70
--- /dev/null
+++ b/multiplication.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "multification of X*Y"
+echo "Enter X"
+read X
+echo "Enter Y"
+read Y
+echo "X*Y = $X*$Y = $[ X*Y ]"
+
+# END #
\ No newline at end of file
diff --git a/myfirstscript.sh b/myfirstscript.sh
index ad53bc9..2c39c40 100644
--- a/myfirstscript.sh
+++ b/myfirstscript.sh
@@ -7,7 +7,7 @@
 #Modified by:
 
 # START
-echo "Welcome $USER"
+echo "Welcome $USERNAME"
 echo "Your present working directory is `pwd`"
 echo "Today date is `date`"
 # END
diff --git a/arkit.co.in-nested-if.sh b/nestedif.sh
similarity index 99%
rename from arkit.co.in-nested-if.sh
rename to nestedif.sh
index 5be4b8d..17d421b 100644
--- a/arkit.co.in-nested-if.sh
+++ b/nestedif.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please Enter Maths Marks: \c"
 read -r m
 echo -e "Please Enter Physics Marks: \c"
diff --git a/or-operator.sh b/or-operator.sh
index 5a66bd7..2931df0 100644
--- a/or-operator.sh
+++ b/or-operator.sh
@@ -5,7 +5,8 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
-echo -e "Enter First Numberic Value: \c"
+
+echo -e "Enter First Numeric Value: \c"
 read -r t
 echo -e "Enter Second Numeric Value: \c"
 read -r b
@@ -13,7 +14,7 @@ read -r b
 if [ $t -le 20 -o $b -ge 30 ]; then
 echo "Statement is True"
 else
-echo "Flase, Statement Try Again."
+echo "False Statement, Try Again."
 fi
 
 # END #
diff --git a/questions.sh b/questions.sh
new file mode 100644
index 0000000..c93a791
--- /dev/null
+++ b/questions.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+## Questions
+
+echo "Hi"
+read $REPLY
+
+echo "How are you?"
+read $REPLY
+
+echo "Whats your Name?"
+read $REPLY
diff --git a/regex.sh b/regex.sh
new file mode 100755
index 0000000..376bb77
--- /dev/null
+++ b/regex.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+#Purpose: regex examples
+#Version: 1.0
+#Create Date: Sun Nov 27 00:27:33 EST 2022
+#Modified Date:
+
+# START #
+
+numString1="1234"
+numString2="16789"
+numString3="1579"
+
+
+echo "Example 1"
+if [[ $numString1 =~ ^1 ]]; then
+	echo "String \"$numString1\" starts with a \"1\", and matches regex: ^1"
+fi
+
+echo "Example 2"
+if [[ $numString2 =~ ^1 ]]; then
+        echo "String \"$numString2\" starts with a \"1\", and matches regex: ^1"
+fi
+
+echo "Example 3"
+if [[ $numString3 =~ ^1.7 ]]; then
+        echo "String \"$numString2\" starts with a \"1\", followed by any character, and followed by a 7. "
+        echo "This string matches the regex: ^1.7"
+fi
+
+echo "Example 4"
+if [[ ! $numString1 =~ ^1.7 ]]; then
+        echo "String \"$numString1\" does not start with a \"1\", followed by any character, and followed by a 7. "
+        echo "This string does not match the regex: ^1.7"
+fi
+
+echo "Example 5"
+if [[ $numString2 =~ 9$ ]]; then
+	echo "String \"$numString2\" ends with a \"9\", and matches the regex: 9$"
+fi
+
diff --git a/remoteload.sh b/remoteload.sh
new file mode 100644
index 0000000..83da24b
--- /dev/null
+++ b/remoteload.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+##################################################
+# #
+# Author: Ankam Ravi Kumar #
+# Website: server-computer.com #
+# Date: 23-02-2019 16:59:56 #
+# Purpose: Capture and Store System Load Average #
+# CPU Usage and Memory Usage #
+##################################################
+# Log File Path
+LOGFILE=/var/log/systemload.log
+
+echo "" > /tmp/remotelog
+
+for i in `cat /opt/hostnames`;
+do
+cat /root/systemload.sh | ssh $i >> /tmp/remotelog
+done
+
+cat /tmp/remotelog |grep -vE "^Last|^There" >> $LOGFILE
diff --git a/serverinformation.sh b/serverinformation.sh
new file mode 100644
index 0000000..85d4d14
--- /dev/null
+++ b/serverinformation.sh
@@ -0,0 +1,118 @@
+#!/bin/bash
+
+mkdir -p /Inventory
+sudo chmod -R 777 /Inventory/
+mkdir -p /tmp/asset
+touch /tmp/asset/hostname.txt
+if [ -f /tmp/asset/hostname.txt ];then
+  echo "File /tmp/asset/hostname.txt Exists"
+else
+  mkdir /tmp/asset
+  touch /tmp/asset/hostname.txt
+fi
+touch /tmp/temptext
+TEMP=/tmp/temptext
+LOG=`ls /tmp/asset/hostname.txt`
+echo "## Host Information" > $LOG
+echo "Host Name : `hostname` " >> $LOG
+echo "`sudo /sbin/ifconfig -a |grep "inet" | awk 'BEGIN { FS = ":" } ; { print $2 }'`" >> $TEMP
+echo "IP Address : `egrep '^10' $TEMP |awk '{ print $1}'`" >> $LOG
+echo "IP Address: `hostname -I`" >> $LOG
+echo "ip a |grep inet |grep -v "::" |awk '{print $2}'" >> $LOG
+echo "iDrac Details: `racadm getniccfg |grep "IP Address" |grep -v "::"`" >> $LOG
+echo "Server Type: `servertype=$(lscpu | grep Hypervisor | wc -l); if [ $servertype -gt 0 ]; then echo "VitualMachine"; else echo "Physical"; fi`" >> $LOG
+echo -en '\n' >> $LOG
+
+## Collecting Hardware Details ##
+echo " " >> $LOG
+echo "## Hardware Information" >> $LOG
+echo " " >> $LOG
+echo "Serial Number     : `sudo lshal |grep system.hardware.serial`" >> $LOG
+echo "Serial Number     : `sudo /usr/sbin/dmidecode -s system-serial-number`" >> $LOG
+echo "Serial Number     : `sudo cat /sys/class/dmi/id/product_serial`" >> $LOG
+echo "Model Number      : `sudo lshal |grep system.hardware.product`" >> $LOG
+echo "Model Number      : `sudo /usr/sbin/dmidecode |grep "SKU Number"`" >> $LOG
+echo "Model Number      : `sudo cat /sys/class/dmi/id/product_name`" >> $LOG
+echo "Hardware Vendor   : `sudo lshal |grep system.hardware.vendor`" >> $LOG
+echo "Hardware Vendor   : `sudo cat /sys/class/dmi/id/chassis_vendor`" >> $LOG
+echo "Hardware Info     : `sudo dmesg |grep DMI`" >> $LOG
+
+## Redhat Version ##
+echo " " >> $LOG
+echo "## OS Version" >> $LOG
+head -n1 /etc/issue >> $LOG
+cat /etc/redhat-release >> $LOG
+echo "Kernel Version: `uname -r`">> $LOG
+echo "OS Version: `hostnamectl | egrep "Operating System" | cut -d ' ' -f5-`" >> $LOG
+
+## CPU Info ##
+echo " " >> $LOG
+echo " " >> $LOG
+echo "## CPU Information" >> $LOG
+grep "model name" /proc/cpuinfo |uniq >> $LOG
+COUNTT=$(cat /proc/cpuinfo |grep "model name" | wc -l)
+echo "$COUNTT Cores" >> $LOG
+
+## RAM/MEMORY Info ##
+echo " " >> $LOG
+echo " " >> $LOG
+echo "## Memory Information" >> $LOG
+grep MemTotal /proc/meminfo >> $LOG
+y=`grep MemTotal /proc/meminfo |awk '{ print $2 }'`
+mb="$(( $y / 1024 ))"
+gb="$(( $mb / 1024 ))"
+echo "RAM : $gb GB" >> $LOG
+
+## Swap Information ##
+echo " " >> $LOG
+echo "## Swap Information" >> $LOG
+y1=$(free -k |grep Swap |awk '{print $2}')
+mb1="$(( $y1 / 1024 ))"
+gb1="$(( $mb1 / 1024 ))"
+echo "Swap Size: $gb1 GB" >> $LOG
+
+## Disk Information ##
+echo " " >> $LOG
+echo "## Disk Information" >> $LOG
+lsblk |grep -E 'part|disk' $LOG
+
+## LVM Information ##
+echo " " >> $LOG
+echo "## Physical Volumes" >> $LOG
+pvs >> $LOG
+
+echo " " >> $LOG
+echo "## Volume Groups" >> $LOG
+vgs >> $LOG
+
+echo " " >> $LOG
+echo "## Logical Volumes" >> $LOG
+lvs >> $LOG
+echo " " >> $LOG
+
+## Partition Information ##
+echo "## DF Command Output" >> $LOG
+echo " " >> $LOG
+df -Ph -x tmpfs -x devtmpfs| sed s/%//g | awk '{ if($5 > 0) print $0;}' >> $LOG
+
+echo " " >> $LOG
+echo "## Port Information" >> $LOG
+ss -alntup |column -t |grep -E 'tcp|udp' >> $LOG
+
+echo " " >> $LOG
+echo "## Service Information" >> $LOG
+systemctl list-units --type=service --state=running |grep -vE 'systemd|selinux' >> $LOG
+
+echo " " >> $LOG
+echo "## Docker Containers" >> $LOG
+sudo docker ps -a >> $LOG
+
+echo " " >> $LOG
+echo "## DNS Server Details" >> $LOG
+cat /etc/resolv.conf >> $LOG
+
+echo "" >> $LOG
+echo "## Server Uptime" >> $LOG
+uptime >> $LOG
+
+sudo cp /tmp/asset/`hostname`.txt /Inventory/`hostname`-`date "+%Y-%m-%d"`.txt
diff --git a/setbashfeature.sh b/setbashfeature.sh
new file mode 100644
index 0000000..c918db2
--- /dev/null
+++ b/setbashfeature.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+#Purpose: Set assigns its arguments to the positional parameters
+#Version:1.0
+#website: https://arkit.co.in
+#Created Date: Tue May 22 23:10:17 IST 2018
+#Modified Date:
+#Author: Ankam Ravi Kumar
+# START #
+set `date`
+echo "Today is $1"
+echo "Month is $2"
+echo "Date is $3"
+echo "Time H:M:S $4"
+echo "TimeZone is $5"
+echo "Year is $6"
+set -x
+# END #
diff --git a/shiftparameters.sh b/shiftparameters.sh
new file mode 100644
index 0000000..5a825da
--- /dev/null
+++ b/shiftparameters.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+#Purpose: Shifting positional parameters automatically
+#Version:1.0
+#Website: https://arkit.co.in
+#Created Date: Tue May 22 22:55:50 IST 2018
+#Modified Date:
+#Author: Ankam Ravi Kumar
+# START #
+set `date`
+echo "Count $#"
+echo "$1 $2 $3 $4 $5"
+shift 2
+echo "$1 $2 $3 $4 $5"
+# END #
diff --git a/systemload.sh b/systemload.sh
new file mode 100644
index 0000000..3f7d663
--- /dev/null
+++ b/systemload.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+##################################################
+# #
+# Author: Ankam Ravi Kumar #
+# Website: server-computer.com #
+# Date: 23-02-2019 16:59:56 #
+# Purpose: Capture and Store System Load Average #
+# CPU Usage and Memory Usage #
+##################################################
+# Log File Path
+LOGFILE=/var/log/systemload.log
+
+HOSTNAME=$(hostname)
+DATE=$(date "+%d-%m-%Y %H:%M:%S")
+SYSTEMLOAD=$(uptime | awk '{ print $8,$9,$10,$11,$12}')
+CPULOAD=$(top -b -n 2 -d1 | grep "Cpu(s)" | tail -n1 |awk '{print $2}')
+MEMORYUSAGE=$(free -m |grep Mem: |tail -n1 |awk '{print $2,$3}')
+
+echo "$DATE $HOSTNAME LoadAverage: $SYSTEMLOAD CPU: $CPULOAD Memory: $MEMORYUSAGE" >> $LOGFILE
diff --git a/uadd.sh b/uadd.sh
new file mode 100644
index 0000000..722e934
--- /dev/null
+++ b/uadd.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "ecnter the user name $NM"
+read NM
+echo "`useradd -d /users/$NM $NM`"
+
+# END #
diff --git a/ud.sh b/ud.sh
new file mode 100644
index 0000000..1c34e9d
--- /dev/null
+++ b/ud.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+#Purpose: eval command Evaluating twice
+#Version:1.0
+#Created Date: Wed Jun 13 22:09:59 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+
+echo "WEl COME TO $USER"
+echo " Your present Wroking Directory is `pwd`"
+echo "Present Processes are `ps -a`"
+echo "Now Time is `date`"
+echo "current logged in  Details are `finger $USER`"
+
+# END #
diff --git a/untiloop.sh b/untiloop.sh
new file mode 100644
index 0000000..7994e64
--- /dev/null
+++ b/untiloop.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+#Purpose: Until Loop Example for Host Ping
+#Version:1.0
+#Created Date: Mon May 28 22:18:52 IST 2018
+#Modified Date:
+#WebSite: https://arkit.co.in
+#Author: Ankam Ravi Kumar
+# START #
+echo -e "Please Enter the IP Address to Ping: \c"
+read -r ip
+until ping -c 3 $ip
+do
+        echo "Host $ip is Still Down"
+        sleep 1
+done
+
+echo "Host $ip is Up Now"
+
+# END #
diff --git a/useradd.sh b/useradd.sh
new file mode 100644
index 0000000..21f061b
--- /dev/null
+++ b/useradd.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+# Script to add a user to Linux system
+if [ $(id -u) -eq 0 ]; then
+	read -p "Enter username : " username
+	read -s -p "Enter password : " password
+	egrep "^$username" /etc/passwd >/dev/null
+	if [ $? -eq 0 ]; then
+		echo "$username exists!"
+		exit 1
+	else
+		pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
+		useradd -m -p $pass $username
+		[ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
+	fi
+else
+	echo "Only root may add a user to the system"
+	exit 2
+fi
diff --git a/useradd_improved.sh b/useradd_improved.sh
new file mode 100644
index 0000000..d41a150
--- /dev/null
+++ b/useradd_improved.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+## Author: Ankam Ravi Kumar
+## Date: 21st Sep 2024
+## Purpose: To Create a users in Linux
+
+check_command_success() {
+	if [ $? -ne 0 ]; then
+		echo "Error: $1"
+		exit 1
+	fi
+}
+
+if [ $(id -u) -ne 0 ]; then
+	echo "Error: Only root may add a user to the system."
+	exit 2
+fi
+
+# Prompt for the username and password
+read -p "Enter username: " username
+read -s -p "Enter password: " password
+echo
+
+if id "$username" &>/dev/null; then
+	echo "Error: User '$username' already exists!"
+	exit 1
+fi
+
+encrypted_password=$(perl -e 'print crypt($ARGV[0], "password")' "$password")
+check_command_success "Failed to encrypt the password."
+
+useradd -m -p "$encrypted_password" "$username"
+check_command_success "Failed to add the user."
+
+passwd -e "$username"
+check_command_success "Failed to set password expiry."
+
+echo "Success: User '$username' has been added to the system!"
diff --git a/userexists.sh b/userexists.sh
new file mode 100644
index 0000000..1b8dde7
--- /dev/null
+++ b/userexists.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+##Purpose: Check given user Exits Or Not 
+##Date: 27th Oct 2016
+##Author: Ankam Ravi Kumar
+##WebSite: https://arkit.co.in
+
+##Start
+echo -e "Please Enter User name you want check: \c"
+read user
+grep $user /etc/passwd > /dev/null
+if [ $? -eq 0 ]; then
+grep $user /etc/passwd 
+echo "$user Exists in this Machine"
+else
+echo "$user does not exists"
+fi
+
+##END
diff --git a/variables.sh b/variables.sh
index 7d765aa..7f3128d 100644
--- a/variables.sh
+++ b/variables.sh
@@ -6,6 +6,7 @@
 #website: https://arkit.co.in
 #Author: Ankam Ravi Kumar
 # START #
+
 A=10
 Ba=23
 BA=45
diff --git a/webserver_ubuntu.sh b/webserver_ubuntu.sh
new file mode 100755
index 0000000..6a28ea9
--- /dev/null
+++ b/webserver_ubuntu.sh
@@ -0,0 +1,142 @@
+#!/usr/bin/env bash
+
+#############################################################
+#                                                           #
+# NOME: webserver_ubuntu.sh                                 #
+#                                                           #
+# AUTOR: Amaury B. Souza (amaurybsouza@gmail.com)           #
+#                                                           #
+# DESCRIÇÃO: O script faz a instalação da stack LAMP        #
+#                                                           #
+# USO: ./webserver_ubuntu.sh                                #
+#############################################################
+
+function menuprincipal () {
+	clear
+	echo " "
+	echo LAMP Stack Ubuntu $0
+	echo " "
+	echo "Escolha uma opção abaixo para começar!
+
+		1 - Instalar Apache no sistema
+		2 - Instalar o banco de dados MariaDB no sistema
+		3 - Instalar o PHP7.2 no sistema
+		4 - Instalar a stack LAMP completa no sistema
+		0 - Sair do menu de instalação"
+echo " "
+echo -n "Opção escolhida: "
+read opcao
+case $opcao in
+	1)
+		function apache () {
+		TIME=2
+			echo Atualizando seu sistema...
+			sleep $TIME
+			apt update && apt upgrade -y
+			echo Iniciando a instalação do Apache no Ubuntu... 
+			sleep $TIME
+			#sudo iptables -I INPUT -p tcp --dport 80 -j ACCEPT
+			#sudo ufw allow http
+			#sudo chown www-data:www-data /var/www/html/ -R
+			apt install -y apache2 apache2-utils
+			sudo systemctl start apache2
+			sudo systemctl enable apache2	
+			echo " "
+				if [ $? -eq 0 ] 
+				then
+					echo O Apache foi instalado no seu sistema.
+				else
+					echo Ops, ocorreu algum erro, vamos tentar de novo!
+				fi
+			}
+			apache
+			read -n 1 -p "<Enter> para menu principal"
+			menuprincipal
+	;;
+
+	2)
+		function maria () {
+		TIME=2
+			echo Iniciando a instalação do MariaDB...
+			sleep $TIME
+			sudo apt -y install mariadb-server mariadb-client
+			sudo systemctl start mariadb
+			sudo systemctl enable mariadb
+				if [ $? -eq 0 ]
+				then
+					echo Agora vamos configurar o banco...
+					sleep $TIME
+					sudo mysql_secure_installation
+					echo " "
+					echo Opa, parabéns, o banco foi instalado e configurado!
+					sleep $TIME
+				else
+					echo Ops, vamos resolver isso? Acho que deu errado.
+				fi
+			}
+			maria
+			read -n 1 -p "<Enter> para menu principal"
+			menuprincipal
+	;;
+
+	3)
+		function php () {
+			echo Iniciando a instalação do PHP...
+			sudo apt install -y php7.2 libapache2-mod-php7.2 php7.2-mysql php-common php7.2-cli php7.2-common php7.2-json php7.2-opcache php7.2-readline
+			sudo a2enmod php7.2
+			sudo systemctl restart apache2	
+			echo " "
+			echo O PHP 7.2 foi instalado, que legal!
+			#Para testar o PHP instalado...
+			#sudo vim /var/www/html/info.php <?php phpinfo(); ?>
+			}
+			php
+			read -n 1 -p "<Enter> para menu principal"
+			menuprincipal
+	;;
+
+	4)
+		function lamp () {
+		TIME=2	
+			#apache
+			echo Vamos iniciar a instalação da stack LAMP no seu sistema... 
+			sleep $TIME
+			echo Instalando o Apache...
+			sleep $TIME
+			apt install -y apache2 apache2-utils
+			sudo systemctl start apache2
+			sudo systemctl enable apache2
+			echo Instalando o banco de dados...
+			sleep $TIME
+			#banco de dados
+			sudo apt -y install mariadb-server mariadb-client
+			sudo systemctl start mariadb
+			sudo systemctl enable mariadb
+			#PHP
+			echo Instalando o PHP...
+			sleep $TIME
+			sudo apt install -y php7.2 libapache2-mod-php7.2 php7.2-mysql php-common php7.2-cli php7.2-common php7.2-json php7.2-opcache php7.2-readline
+			sudo a2enmod php7.2
+			sudo systemctl restart apache2
+			echo Instalação concluída com êxito!
+			sleep $TIME
+		}
+			lamp
+			read -n 1 -p "<Enter> para menu principal"
+			menuprincipal
+	;;
+
+	0)
+		function sair () {
+			TIME=2
+			echo " "
+			echo Saindo do sistema...
+			sleep $TIME
+			exit 0
+		}
+		sair
+	;;
+
+esac
+}
+menuprincipal
diff --git a/while-loop.sh b/while-loop.sh
index b636866..3f314c7 100644
--- a/while-loop.sh
+++ b/while-loop.sh
@@ -1,8 +1,10 @@
-While Loop Example, print any given number table.
-
 #!/bin/bash
-## While Loop Example with 2 table
-echo -e "Please provide one value:\c"
+# While Loop Example with 2 table, print any given number table.
+# See Full Explanation of this above shell script [while loop](https://www.youtube.com/Techarkit?sub_confirmation=1)
+
+#START
+
+echo -e "Please provide one value: \c"
 read -r c
 i=1
 while [ $i -le 10 ]
@@ -12,4 +14,4 @@ echo "$c * $i = $b"
 i=`expr $i + 1`
 done
 
-See Full Explanation of this above shell script [while loop](https://www.youtube.com/Techarkit?sub_confirmation=1)
+#END
\ No newline at end of file