Name
wait
- wait [-i
spawn_id] [-nowait] [args] Wait until a spawned process terminates. By default the current process is waited for; the -i option can specify another spawn ID.
The command returns a list of four numbers: (1) the process ID for which to wait, (2) the spawn ID of the process for which to wait, (3) 0 for success or −1 if error occurred, and (4) the return status or error status of the terminating process. Additional optional information may be returned, indicating the reason for termination.
The -nowait option causes an immediate return. The process can then terminate later without an explicit wait command.
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