Bash Scripting Programs

1>$ nano First.sh

Add the following bash script to the file and save the file.

#!/bin/bash
echo "Hello World"

$ chmod a+x First.sh
$ ./First.sh

o/p -> Hello World

2> How to read user input

In bash, we can take user input using the read command.

read variable_name

To prompt the user with a custom message, use the -p flag.

read -p "Enter your age" variable_name

Example:

#!/bin/bash

echo "Enter a numner"
read a

echo "Enter a numner"
read b

var=$((a+b))
echo $var