Automatically execute commands after receiving signals by processes or the operating system. Can be used to perform cleanups for interruptions by the user or other actions.

# To list available signals to set traps for:
trap -l

# To list active traps for the current shell:
trap -p

# To set a trap to execute commands when one or more signals are detected:
trap 'echo "Caught signal <SIGHUP>"' <SIGHUP>

# To remove active traps:
trap - <SIGHUP> <SIGINT>