sleep man page on Archlinux

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SLEEP(3)		   Linux Programmer's Manual		      SLEEP(3)

NAME
       sleep - sleep for the specified number of seconds

SYNOPSIS
       #include <unistd.h>

       unsigned int sleep(unsigned int seconds);

DESCRIPTION
       sleep()	makes  the  calling  thread  sleep  until seconds seconds have
       elapsed or a signal arrives which is not ignored.

RETURN VALUE
       Zero if the requested time has elapsed, or the number of	 seconds  left
       to sleep, if the call was interrupted by a signal handler.

CONFORMING TO
       POSIX.1-2001.

BUGS
       sleep()	may be implemented using SIGALRM; mixing calls to alarm(2) and
       sleep() is a bad idea.

       Using longjmp(3) from a signal handler or  modifying  the  handling  of
       SIGALRM while sleeping will cause undefined results.

SEE ALSO
       alarm(2), nanosleep(2), signal(2), signal(7)

COLOPHON
       This  page  is  part of release 3.65 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU				  2010-02-03			      SLEEP(3)
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