Run a command with a time limit. More information: https://www.gnu.org/software/coreutils/timeout.
sleep 10 and terminate it after 3 seconds:timeout 3s sleep 10
TERM by default, kill -l to list all signals):timeout --signal INT|HUP|KILL|... 5s sleep 10
stderr showing signal sent upon timeout:timeout --verbose 0.5s|1m|1h|1d|... command
timeout --preserve-status 1s|1m|1h|1d|... command
KILL signal after certain duration if the command ignores initial signal upon timeout:timeout --kill-after=5m 30s command