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SLEEP(3) | Linux Programmer's Manual | SLEEP(3) |
NAME¶
sleep - Sleep for the specified number of secondsSYNOPSIS¶
#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.1BUGS¶
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)April 7, 1993 | GNU |