#!/bin/bash
#This is a simple menu with select option.
function diskspace()
{
clear
df -h
}

whoseon()
{
clear
who
}

myservice()
{
clear
chkconfig --list &>2 |tee ~/myservice
cat ~/myservice
}

PS3="Enter Option:"

select option in "Display Diskspace" "Display Logged on user" "Display service" "Exit Program"
do
case $option in

"Display Disk Space")
diskspace;;

"Display Logged on User")
whoseon;;

"Display service")
myservice;;

"Exit program")
break;;

*) echo "Sorry wrong choice";;
esac
done


The output is "Sorry wrong choice"
what can be the possible error?
Thanks in advance

you have mistyped "Display Diskspace" or "Display Disk Space"? "Display Logged on user" or "Display Logged on User"? ...

Only "Display service" is an exact match (and works). All the others differ sightly between the select statement and the cases.

Ha! Beaten to it by pan64!

You have spelling issues. You have "Display Diskspace" becoming "Display Disk Space" (extra space). "Display Logged on user" becomes "Display Logged on User" (caps U). "Display service" seems to work. Finally "Exit Program" becomes "Exit program" (caps P).

If you fix those few issues it should work for you.