SHELL Scripting

Example1:

#/bin/bash

a=''
case $@ in
        testfile) for user in $(cat $1);do
                echo "Adding user:" $user
                useradd -s /bin/false $user
                done
                ;;
        $a) echo "Usage: /root/createusers"
                ;;
        *) echo "Input File Not Found"

esac

Example2:

#!/bin/bash

case $@ in

postconf)

         echo "postroll"

         ;;

postroll)

         echo "postconf"

         ;;

*)

         echo "/root/random postconf|postroll"

         ;;

esac

Example3:

#/bin/bash

for (( counter=100; counter>1; counter-- ));do

        echo $counter

done

exit 0