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Add documentation for wait command

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ridiculousfish 2017-11-16 11:28:32 -08:00
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\section wait wait - wait for commands to complete
\subsection wait-synopsis Synopsis
\fish{synopsis}
wait [-n | --any] PID...
\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.
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.
\subsection wait-example Example
`sleep 10 & ; wait %1` spawns sleep in the background, and then waits until it finishes.