fish-shell/sphinx_doc_src/cmds/wait.rst

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.. _cmd-wait:
wait - wait for jobs to complete
================================
Synopsis
--------
wait [-n | --any] [PID | PROCESS_NAME] ...
Description
-----------
``wait`` waits for child jobs to complete.
- If a pid is specified, the command waits for the job that the process with the pid 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`` / ``--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.
Example
-------
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::
sleep 10 &
wait $last_pid
spawns ``sleep`` in the background, and then waits until it finishes.
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::
for i in (seq 1 5); sleep 10 &; end
wait
spawns five jobs in the background, and then waits until all of them finishes.
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::
for i in (seq 1 5); sleep 10 &; end
hoge &
wait sleep
spawns five jobs and ``hoge`` in the background, and then waits until all ``sleep``s finishes, and doesn't wait for ``hoge`` finishing.