Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
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:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE	TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

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)

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

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=sleep&sektion=1&manpath=SunOS+5.10>

home | help