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sleep(1)                         User Commands                        sleep(1)



NAME
       sleep - suspend execution for an interval

SYNOPSIS
       sleep time

DESCRIPTION
       The sleep utility will suspend execution for at least the integral num-
       ber of seconds specified by the time operand.

OPERANDS
       The following operands are supported:

       time     A non-negative decimal integer specifying the number  of  sec-
                onds 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_MES-
       SAGES, 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:


       tab()    allbox;    cw(2.750000i)|     cw(2.750000i)     lw(2.750000i)|
       lw(2.750000i).    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:

         o  Terminate normally with a zero exit status.

         o  Effectively ignore the signal.


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



SunOS 5.10                        1 Feb 1995                          sleep(1)