waitpid - Man Page

• Sleep until all processes whose PIDs have been specified have exited: waitpid pid1 pid2 ...
• Sleep for at most n seconds: waitpid [-t|--timeout] n pid1 pid2 ...
• Do not error if specified PIDs have already exited: waitpid [-e|--exited] pid1 pid2 ...
• Sleep until n of the specified processes have exited: waitpid [-c|--count] n pid1 pid2 ...
• Display help: waitpid [-h|--help]

tldr.sh

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

Be more verbose.

-t,  --timeout seconds

Maximum wait time.

-e,  --exited

Don’t error on already exited PIDs.

-c,  --count count

Number of process exits to wait for.

-h,  --help

Display help text and exit.

-V,  --version

Display version and exit.

waitpid has the following exit status values:

0

success

1

unspecified failure

2

system does not provide necessary functionality

3

timeout expired

Thomas Weißschuh

waitpid(2) wait(1P) getino(1)

For bug reports, use the issue tracker.

The waitpid command is part of the util-linux package which can be downloaded from Linux Kernel Archive.