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wait - wait for jobs to complete¶

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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

sleep 10 &wait $last\_pid

spawns sleep in the background, and then waits until it finishes.

for i in (seq 1 5); sleep 10 &; endwait

spawns five jobs in the background, and then waits until all of them finishes.

for i in (seq 1 5); sleep 10 &; endhoge &wait sleep

spawns five jobs and hoge in the background, and then waits until all sleeps finish, and doesn't wait for hoge finishing.