New to shell scripting.

I can't get my script to execute multiple commands.

Here's the code. It's a menu script.

#!/bin/ksh
clear
print "SDE MENU"
PS3="SDE MENU, enter choice:"
select clean_menu in "tasdedev instance 5151" "orkindev instance 5155" "tasdetst
instance 5157" "orkinsys instance 5159" "orkidev instance 5168" "Exit"

do
case $clean_menu in

"tasdedev instance 5151")
su - tasdedev \
sdemon -o status 5151;;

It su's but will not execute the next command.

I sometimes receive the following message:
SDE MENU, enter choice:2
ksh: sdemon: 0403-006 Execute permission denied.

Sometimes it just su's.

Help.

Try using the su with the command option on the same line:
su - tasdedev -c "sdemon -o status 5151"