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Top Forums UNIX for Dummies Questions & Answers sleep 10 && command doesn't work Post 302297113 by chebarbudo on Thursday 12th of March 2009 01:53:25 PM
Old 03-12-2009
Question sleep 10 && command doesn't work

Hi there,
I found a trick to easily postpone a command by a few seconds:
Code:
supernova:~# sleep 10 && command &

If you logout, the command should still be executed... But not all the time.
Could anyone of you explain me why the following command is executed even after logging out:
Code:
supernova:~# sleep 10 && touch somefile &

and not that one:
Code:
supernova:~# sleep 10 && /etc/init.d/networking force-reload &

Thanks in advance
Santiago
 

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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 calling thread 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, if the call was interrupted by a signal handler. CONFORMING TO
POSIX.1-2001. BUGS
sleep() 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 ALSO
alarm(2), nanosleep(2), signal(2), signal(7) COLOPHON
This page is part of release 3.27 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)
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