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sigpause(3)

usleep(3)

getitimer(2)





   sleep(3)                (BSD Compatibility Package)                sleep(3)


   NAME
         sleep - suspend execution for interval

   SYNOPSIS
         cc [ flag... ] file ... -lucb

         sleep(seconds)
         unsigned seconds;

   DESCRIPTION
         sleep suspends the current process from execution for the number of
         seconds specified by the argument.  The actual suspension time may be
         up to 1 second less than that requested, because scheduled wakeups
         occur at fixed 1-second intervals, and may be an arbitrary amount
         longer because of other activity in the system.

         sleep is implemented by setting an interval timer and pausing until
         it expires.  The previous state of this timer is saved and restored.
         If the sleep time exceeds the time to the expiration of the previous
         value of the timer, the process sleeps only until the timer would
         have expired, and the signal which occurs with the expiration of the
         timer is sent one second later.

   SEE ALSO
         sigpause(3), usleep(3)

         getitimer(2) in the Programmer's Reference Manual


























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