sleep man page on CentOS

sleep man page on CentOS

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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  current  process  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.

CONFORMING TO
       POSIX.1-2001.

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

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

SEE ALSO
       alarm(2), signal(2)

GNU				  1993-04-07			      SLEEP(3)

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