Shell Programming and Scripting

I am extremely desperate for help with this menu coding problem I'm having. Whenver I go to execute my script file, I keep getting an error message that says the following:

option: Undefined variable.

I implore someone to PUH-LEEZE point me in the right direction. I can't stress my appreciation. If I could beg, I would. Anyone, please help me. Thank you very much. My code follows:

#! /bin/csh


cat <<ENDINPUT

Menu of Options

1. Display all files in a user's home directory
2. Welcome yourself to the program
3. Display System Information
4. Exit back to Windows

ENDINPUT
echo Please enter your choice:
read option
case "$option" in
1)
ls -l
;;
2)
echo welcome
;;
3)
uname -a
;;
4)
exit
;;
*)
echo "Use 1, 2, 3, or 4"
;;
esac

Change the first line to

Code:

#!/bin/sh

also put a

Code:

while true; do
.....
.....
done

around the cat/read/case stuff so it repeats itself until 4 is selected.

That didn't change anything. I'm still getting the message that "option" is an undefined variable. I'm ready to pull my hair out.

Porter,

Okay, ignore my last post. I didn't see the second part of your response. What exactly do you mean by "put it around the /cat/read/case stuff"? I'm lost.

This works on Solaris 9:

Code:

#!/bin/sh

while true; do

cat <<ENDINPUT

Menu of Options

1. Display all files in a user's home directory
2. Welcome yourself to the program
3. Display System Information
4. Exit back to Windows

ENDINPUT
echo Please enter your choice:
read option
case "$option" in
        1)
                ls -l
                ;;
        2)
                echo welcome
                ;;
        3)
                uname -a
                ;;
        4)
                exit
                ;;
        *)
                echo "Use 1, 2, 3, or 4"
                ;;
esac

done

I'm not using Solaris 9. I'm just using plain, ol' Unix from what I know. I'm still getting the error message that option is an undefined variable.

I put in the while statement and it's now telling me the following:

while: Expression Syntax

Now it won't even bring up the menu.