Shell Programming and Scripting

#!/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 


dothis(){
clear
echo ""
echo "Hostname: $server_name"

# I don't know what you are doing here...
echo "IP      :`ping $server_name |head -1|cut -d':' -f2|sed s/\(//|sed s/\)//`"
echo ""
sleep 1

}



for i in $server
do
  if [ "$i" = "$server_name" ]; then
    dothis; exit
  fi
done

echo "Wrong input"
sleep 1
Main_chk

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