temporary-file-using-mktemp-and-trap

Temporary file using mktemp and trap

To create a temporary file:

file=$(mktemp)

Why use mktemp instead of tempfile?

• Because mktemp is available on more systems.

To remove a temporary file when the program exist:

trap "rm -f $file" EXIT

Why trap on EXIT, instead of TERM, INT, HUP?

• Because EXIT covers all the cases.