sleep

 

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 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 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: Example of the sleep command.
 
      To execute a command after a certain amount of time:
 
      (sleep 105; command)&
      or to execute a command every so often:
 
      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: 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  attri-
      butes:
 
 
 
 
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    1
 
 
 
 
 
 
 User Commands                                            sleep(1)
 
 
 
      ____________________________________________________________
     |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
     |_____________________________|_____________________________|
     | Availability                | SUNWcsu                     |
     |_____________________________|_____________________________|
 
 


SEE ALSO
      wait(1),  alarm(2),  sleep(3C),  wait(3UCB),  attributes(5),
      environ(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.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    2
 
 
 

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