Shell Programming and Scripting

server="icapp1 icapp6 ihapp1 ihapp6 icapp2 icapp3 icapp4 ihapp2 ihapp3 ihapp4 icapp5 ihapp5 "
printf "\nCheck server: "
read input
if [ $input == $server ]
then

servers="icapp1 icapp6 ihapp1 ihapp6 icapp2 icapp3 icapp4 ihapp2 ihapp3 ihapp4 icapp5 ihapp5 "
for server in $( echo $servers | nawk '{A[++c] = $0} END { for ( i = 1; i <= c; i++ ) { print A[i] }}' RS=' ' );
do
read input
if [ $input == $server ]
then
   echo "Success"
else
   echo "Failure"
fi
done

$ server="ix1 ix2 bx1 bx2"

$ echo $server
ix1 ix2 bx1 bx2

$ var1="ix1"

$ echo $var1
ix1

$ echo $server | grep $var1
ix1 ix2 bx1 bx2

$ var1="ix3"

$ echo $server | grep $var1

$

[ "${server}" != "${server/$input//}" ] && echo OK || echo NOK

server="icapp1 icapp6 ihapp1 ihapp6 icapp2 icapp3 icapp4 ihapp2 ihapp3 ihapp4 icapp5 ihapp5 "
for i in $server
do
  if [ "$i" = "$input" ]; then
    echo hello
  fi
done

case $server in
  ("$input "*|*" $input "*|*" $input")
     echo hello
esac

#!/bin/bash

server="icapp1 icapp6 ihapp1 ihapp6 icapp2 icapp3 icapp4 ihapp2 ihapp3 ihapp4 icapp5 ihapp5 "

# -p "Prompt" : Display prompt to user without a newline 
read -p "Check Server : " server_name 


# i -> stands for upper/lower case 
# w -> --word-regexp

if grep -iw "$server_name" <<<"$server" >/dev/null; then
	echo "Yes $server_name found in server list"
         # some more code...
else
	echo "No $sever_name not found in server list"
        # some more code...
fi

X="¦"${server// /¦}"¦"
[ "${X}" != "${X/¦$input¦/}" ] && echo OK || echo NOK

X=" $server "
[ "${X}" != "${X/ $input /}" ] && echo OK || echo NOK