1. Shebang:

The shebang is the first line of a script and specifies the shell that should be used to interpret the script.

```
#!/bin/bash
```
## Reading Input:

```
echo "Enter your name:"
read user_name
echo "Hello, $user_name!"
```


Chmod

user group alluser

<img width="386" alt="image" src="https://github.com/pythonkid2/DevOps-Practice/assets/100591950/396b5384-b1f9-422c-b59f-19bf7eddad62">

# pipe
```
ps -ef | grep top 
```
sends output of first command to second command

#if elif fo r

<img width="286" alt="image" src="https://github.com/pythonkid2/DevOps-Practice/assets/100591950/34f9c7f1-7952-461b-9933-4b161d13af67">

<img width="478" alt="image" src="https://github.com/pythonkid2/DevOps-Practice/assets/100591950/3b84deef-ee4c-4760-a3c9-fabecf09a0e8">

for i in $(seq 1 100); do
        echo "i love INDIA"; done


## awk
```
ps -ef | awk -F" " '{print $2}'
```
4 -read 
2- write
1- execute