SLEEP(3) Linux Programmer's Manual SLEEP(3)NAMEsleep - sleep for the specified number of seconds
unsigned int sleep(unsigned int seconds);
DESCRIPTIONsleep() makes the calling thread sleep until seconds seconds have
elapsed or a signal arrives which is not ignored.
Zero if the requested time has elapsed, or the number of seconds left
to sleep, if the call was interrupted by a signal handler.
BUGSsleep() 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 ALSOalarm(2), nanosleep(2), signal(2), signal(7)COLOPHON
This page is part of release 3.53 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)