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Update doc of wait command to reflect changes in supporting process names to wait.

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slama 2018-03-25 11:24:43 +09:00
parent b758f84976
commit 3be3f2e6a2
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doc_src/wait.txt
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@ -1,16 +1,34 @@
\section wait wait - wait for commands to complete
\section wait wait - wait for jobs to complete
\subsection wait-synopsis Synopsis
\fish{synopsis}
wait [-n | --any] PID...
wait [-n | --any] [PID | PROCESS_NAME] ...
\endfish
\subsection wait-description Description
`wait` waits for child processes to complete. If a pid is specified, the command waits for that pid. If no pid is specified, the command waits for all background processes.
`wait` waits for child jobs to complete.
If the `-n` / `--any` flag is provided, the command returns as soon as the first subprocess completes. If it is not provided, it returns after all subprocesses 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.
\subsection wait-example Example
`sleep 10 & ; wait %1` spawns sleep in the background, and then waits until it finishes.
\fish
sleep 10 &
wait $last_pid
\endfish
spawns `sleep` in the background, and then waits until it finishes.
\fish
for i in (seq 1 5); sleep 10 &; end
wait
\endfish
spawns five jobs in the background, and then waits until all of them finishes.
\fish
for i in (seq 1 5); sleep 10 &; end
hoge &
wait sleep
\endfish
spawns five jobs and `hoge` in the background, and then waits until all `sleep`s finishes, and doesn't wait for `hoge` finishing.