Content-type: text/html Man page of sleep

sleep

Section: User Commands (1)
Updated: 1 Feb 1995
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NAME

sleep - suspend execution for an interval  

SYNOPSIS

sleep time  

DESCRIPTION

The sleep utility will suspend execution for at least the integral number of seconds specified by the time operand.  

OPERANDS

The following operands are supported:

time A non-negative decimal integer specifying the number of seconds for which to suspend execution.

 

EXAMPLES

Example 1: Suspending command execution for a time

To execute a command after a certain amount of time:

example% (sleep 105; command)&

Example 2: Executing a command every so often

example% while true
do
        command
        sleep 37
done
 

ENVIRONMENT VARIABLES

See environ(5) for descriptions of the following environment variables that affect the execution of sleep: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.  

EXIT STATUS

The following exit values are returned:

0 The execution was successfully suspended for at least time seconds, or a SIGALRM signal was received (see NOTES).

>0 An error has occurred.

 

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
AvailabilitySUNWcsu
Interface StabilityStandard

 

SEE ALSO

wait(1), alarm(2), sleep(3C), wait(3UCB), attributes(5), environ(5), standards(5)  

NOTES

If the sleep utility receives a SIGALRM signal, one of the following actions will be taken:

• Terminate normally with a zero exit status.

• Effectively ignore the signal.

The sleep utility will take the standard action for all other signals.


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPERANDS
EXAMPLES
ENVIRONMENT VARIABLES
EXIT STATUS
ATTRIBUTES
SEE ALSO
NOTES

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Time: 02:39:31 GMT, October 02, 2010