MPE/iX Shell and Utilities Reference Manual, Vol 2

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

NAME

sleep — suspend execution for a speciﬁed time

SYNOPSIS

sleep seconds

DESCRIPTION

The sleep command continues running until the speciﬁed number of seconds has elapsed.

sleep can delay execution of a program or produce periodic execution in conjunction with

shell commands.

The seconds argument can be either a number of seconds, or a more general time description

of the form nhnmns, with the nh, nm, and the s being optional.

EXAMPLES

sleep 20h10m

sleeps for 20 hours and 10 minutes (or 72600 seconds).

DIAGNOSTICS

Possible exit status values are:

0 Successful completion.

2 Failure because you speciﬁed no seconds value or because seconds is an invalid argu-

ment (for example, invalid format).

Message

Message: Improper sleep interval specification in "seconds"

Cause: You speciﬁed a value for seconds on the command line that contained a charac-

ter other than a digit, h, m,ors.

Action: Specify a value for seconds that does not contain any invalid characters.

Message: Unknown option "–option"

Cause: You speciﬁed an option that is not valid for this command.

Action: Check the DESCRIPTIONS section for a list of valid options.

PORTABILITY

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

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.

Commands and Utilities 1-557