Linux and Unix wait command
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Await process completion.
wait [pid] [jobid]
| pid | The unsigned decimal integer process ID of a command, for which the utility is to wait for the termination. |
| jobid | A job control job ID that identifies a background process group to be waited for. The job control job ID notation is applicable only for invocations of wait in the current shell execution environment, and only on systems supporting the job control option. |
wait 2017 - Wait on pid 2017 until termination