1 .\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
3 .\" %%%LICENSE_START(VERBATIM)
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25 .\" Modified Sat Jul 24 18:16:02 1993 by Rik Faith (faith@cs.unc.edu)
26 .TH SLEEP 3 2010-02-03 "GNU" "Linux Programmer's Manual"
28 sleep \- sleep for the specified number of seconds
31 .B #include <unistd.h>
33 .BI "unsigned int sleep(unsigned int " "seconds" );
37 makes the calling thread sleep until
39 seconds have elapsed or a signal arrives which is not ignored.
41 Zero if the requested time has elapsed,
42 or the number of seconds left to sleep,
43 if the call was interrupted by a signal handler.
48 may be implemented using
58 from a signal handler or modifying the handling of
60 while sleeping will cause undefined results.