I haven't done any bash scripting for awhile and I've forgotten some things.
I've got this little script I run from a terminal in Gnome, it opens a terminal, decrypts my password file and opens it with "less" and when I close less it encrypts the file and deletes the decrypted file. The problem comes if and when I choose to close the terminal by right-click and "close", it doesn't delete the unencrypted file.
My question is isn't there some way of making it catch the sighup and deleting the file? I tried

case $SIGHUP
do rm -f .passwords
done
esac

but I get all sorts of rookie error reports. Help! Thanks.

Been a while since I've done it. You can use the "trap" command (this is a bash builtin) to define what to do when you receive a SIGHUP. You'd set the trap action in the script.

man bash

locate trap (at the beginning of a line - you'll see it multiple times before you get to the actual command).

Okay, thanks jlightner. I included the following in the script and it works.

trap 'rm -f /rbandmb/.passwords' SIGHUP

"/rbandmb" being my home directory. Thanks again.