fish-shell/sphinx_doc_src/cmds/wait.rst

51 lines
1.1 KiB
ReStructuredText
Raw Normal View History

.. _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
-------
2018-12-19 11:14:04 +08:00
::
sleep 10 &
wait $last_pid
spawns ``sleep`` in the background, and then waits until it finishes.
2018-12-19 11:14:04 +08:00
::
for i in (seq 1 5); sleep 10 &; end
wait
spawns five jobs in the background, and then waits until all of them finishes.
2018-12-19 11:14:04 +08:00
::
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.