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-'\" t
-.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.\" Modified Sat Jul 24 18:16:02 1993 by Rik Faith (faith@cs.unc.edu)
-.TH sleep 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-sleep \- sleep for a specified number of seconds
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <unistd.h>
-.P
-.BI "unsigned int sleep(unsigned int " "seconds" );
-.fi
-.SH DESCRIPTION
-.BR sleep ()
-causes the calling thread to sleep either until
-the number of real-time seconds specified in
-.I seconds
-have elapsed or until a signal arrives which is not ignored.
-.SH 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.
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR sleep ()
-T} Thread safety MT-Unsafe sig:SIGCHLD/linux
-.TE
-.SH VERSIONS
-On Linux,
-.BR sleep ()
-is implemented via
-.BR nanosleep (2).
-See the
-.BR nanosleep (2)
-man page for a discussion of the clock used.
-.P
-On some systems,
-.BR sleep ()
-may be implemented using
-.BR alarm (2)
-and
-.B SIGALRM
-(POSIX.1 permits this);
-mixing calls to
-.BR alarm (2)
-and
-.BR sleep ()
-is a bad idea.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-POSIX.1-2001.
-.SH CAVEATS
-Using
-.BR longjmp (3)
-from a signal handler or modifying the handling of
-.B SIGALRM
-while sleeping will cause undefined results.
-.SH SEE ALSO
-.BR sleep (1),
-.BR alarm (2),
-.BR nanosleep (2),
-.BR signal (2),
-.BR signal (7)