WAITPID(1) WAITPID(1) waitpid - waitpid [-v] [--timeout|-t ] pid... waitpid is a simple command to wait for arbitrary non-child processes. It exits after all processes whose PIDs have been passed as arguments have exited. -v, --verbose . -t, --timeout . -e, --exited Don't error on already exited PIDs. -c, --count . -h, --help . -V, --version . waitpid : 0 1 2 3 Thomas Weissschuh waitpid(2) wait(1P) waitpid util-linux, Linux . util-linux 2.41 2025-03-29 WAITPID(1)