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

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

       signal(2), alarm(2)