fish-shell/doc_src/cmds/wait.rst
2024-09-18 22:11:14 +02:00

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.. _cmd-wait:
wait - wait for jobs to complete
================================
Synopsis
--------
.. synopsis::
wait [-n | --any] [PID | PROCESS_NAME] ...
Description
-----------
.. only:: builder_man
NOTE: This page documents the fish builtin ``wait``.
To see the documentation on any non-fish versions, use ``command man wait``.
``wait`` waits for child jobs to complete.
If a *PID* is specified, the command waits for the job that the process with that process ID belongs to.
If a *PROCESS_NAME* is specified, the command waits for the jobs that the matched processes belong to.
If neither a pid nor a process name is specified, the command waits for all background jobs.
If the **-n** or **--any** flag is provided, the command returns as soon as the first job completes. If it is not provided, it returns after all jobs complete.
The **-h** or **--help** option displays help about using this command.
Example
-------
::
sleep 10 &
wait $last_pid
spawns ``sleep`` in the background, and then waits until it finishes.
::
for i in (seq 1 5); sleep 10 &; end
wait
spawns five jobs in the background, and then waits until all of them finish.
::
for i in (seq 1 5); sleep 10 &; end
hoge &
wait sleep
spawns five ``sleep`` jobs and ``hoge`` in the background, and then waits until all ``sleep``\s finish, and doesn't wait for ``hoge``.