alarm man page on Oracle

Man page or keyword search:  
man Server   33470 pages
apropos Keyword Search (all sections)
Output format
Oracle logo
[printable version]

ALARM(2)		   Linux Programmer's Manual		      ALARM(2)

       alarm - set an alarm clock for delivery of a signal

       #include <unistd.h>

       unsigned int alarm(unsigned int seconds);

       alarm()	arranges  for  a SIGALRM signal to be delivered to the calling
       process in seconds seconds.

       If seconds is zero, any pending alarm is canceled.

       In any event any previously set alarm() is canceled.

       alarm() returns the number of seconds remaining	until  any  previously
       scheduled alarm was due to be delivered, or zero if there was no previ‐
       ously scheduled alarm.

       SVr4, POSIX.1-2001, 4.3BSD.

       alarm() and setitimer(2) share the same timer; calls to one will inter‐
       fere with use of the other.

       sleep(3)	 may be implemented using SIGALRM; mixing calls to alarm() and
       sleep(3) is a bad idea.

       Scheduling delays can, as ever, cause the execution of the  process  to
       be delayed by an arbitrary amount of time.

       gettimeofday(2),	 pause(2), select(2), setitimer(2), sigaction(2), sig‐
       nal(2), sleep(3), time(7)

       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

Linux				  2013-04-18			      ALARM(2)

List of man pages available for Oracle

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net