Prevent terminal from closing

Question

Hi all, I'm new to solaris and i have some problem.. hope you guys can help me out.
Currently i'm doing a script for my project and I want to prevent people from exiting the terminal by clicking the "X" at the top right.
so in short:
when I run the script,
user cannot exit out of the terminal
unless the scipt finish running.
Thanks alot!

Answer 1

My first thought was to remove the frame with the "X" button, but its is added by the window manager; metacity, so it turned out to be a rather bad idea.
However, when you click 'X' in a terminal window it will send a SIGHUP to the window in question, so all you have to do is to catch SIGHUP signals before you run your script, i.e, to run "/bin/true" when you get a SIGHUP:
# trap /bin/true HUP
# ./path/to/some/script
A third method would be to determine the parent shell process from the script itself, and then use the 'nohup' command to force the parent process to ignore SIGHUPs, for example:
mybox(~):$ cat dont_kill_me.sh
#!/bin/sh
shell=`ptree $$ |grep sh |head -1 |awk '{print $1}'`
nohup -pa ${shell}
while :; do
/bin/echo "enter something: \c"
read something
echo "got: $something"
if [ "${something}" = "quit" ]; then
exit 0
fi
done
mybox(~):$
If you run this script, it will not directly be affected by clicking the 'X'.
However, the nohup will only be effective during the lifetime of the script. So if you start the script and click "X", your script will finish, but once the script is finished the SIGHUP will be sent to the shell..
.7/M.