Basic Shell Scripting: Chapter-VI

Case Statement in Shell Script:

In shell script case statement is similar to switch statement in C. The case statement allows you to easily check pattern (conditions) and then process a command-line if that condition evaluates to true.

Syntax of bash case statement:

case expression in
    pattern1 )
        statements ;;
    pattern2 )
        statements ;;
    ...
esac

Example:

#!/bin/bash

echo -n "Are you a linuxfunda reader? [Yes or No]: "

read answer

case $answer in 

    [yY] | [yY][Ee][Ss] )
                echo "Great Have fun with new how to guides!"
                ;;

    [nN] | [nN][Oo] )
                echo "You should read the posts. These are excellent.";
                exit 1
                ;;
        *) echo "Please Enter a valid input: [Yes or No]"
            ;;
esac

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