MPE/iX Shell and Utilities Reference Manual, Vol 2

wait(1) MPE/iX Shell and Utilities wait(1)

NAME

wait — wait for process to complete

SYNOPSIS

wait [pidjob-id...]

DESCRIPTION

wait waits for the termination of one or more jobs or child processes in the background. If

you specify job-ids, wait waits for all processes in each job to terminate. If you specify a

pid, wait waits for the child process with that process

ID to terminate. If no child process has

that process ID, wait returns immediately.

If you specify neither a pid nor a job-id, wait waits for the termination of all process IDs

known to the invoking shell.

DIAGNOSTICS

If you speciﬁed a job-id which has terminated or is unknown by the invoking shell, an error

message and a return code of 127 is returned. If you speciﬁed a pid which has terminated or is

unknown to the shell, a return code of 127 is returned. If a signal terminated the process ab-

normally, the exit status is a value greater than 128 unique to that signal; otherwise, possible

exit statuses are:

0 Successful completion.

1-126 An error occurred.

127 A speciﬁed pid or job-id has terminated or is unknown by the invoking shell.

Messages

Because this utility is built into the

MPE/iX

Shell, see the sh(1) man page for a complete list of

error messages that you may receive when using it.

PORTABILITY

POSIX.2. x/OPEN Portability Guide 4.0. All UNIX systems.

NOTE

This command is built into the shell.

MPE/iX NOTES

For information on how the current MPE/iX implementation may affect the operation of this

utility, see Appendix A, MPE/iX Implementation Considerations.