WAITPID(1) WAITPID(1) waitpid - waitpid [-v] [--timeout|-t seconds] PID[:inode]... 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. Optionally, a process can be addressed with the format PID:inode. The inode identifies the unique process's file descriptor. To retrieve a process's inode number you can use the getino(1) utility. -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) getino(1) waitpid util-linux, Linux . util-linux 2.42.3 2026-09-02 WAITPID(1)