tldr/pages/linux/trap.md

trap

Execute a command upon an event. More information: https://www.gnu.org/software/bash/manual/bash.html#index-trap.

• List the available event names (e.g. SIGWINCH):

trap -l

• List the commands and the names of the expected events:

trap

• Execute a command when a signal is received:

trap 'echo "Caught signal {{SIGHUP}}"' {{SIGHUP}}

• Remove commands:

trap - {{SIGHUP}} {{SIGINT}}

• Ignore a signal:

trap '' {{SIGINT}}