alarm(2) System Calls Manual alarm(2)NAME
alarm - set a process's alarm clock
SYNOPSIS DESCRIPTION
instructs the alarm clock of the calling process to send the signal to the calling process after the number of real-time seconds specified
by sec have elapsed; see signal(5). Specific implementations might place limitations on the maximum supported alarm time. The constant
defined in specifies the implementation-specific maximum. Whenever sec is greater that this maximum, it is silently rounded down to it.
On all implementations, is guaranteed to be at least 31 days (in seconds).
Alarm requests are not stacked; successive calls reset the alarm clock of the calling process.
If sec is 0, any previously made alarm request is canceled.
Alarms are not inherited by a child process across a but are inherited across an
On systems that support the and system calls, the timer mechanism used by is the same as that used by Thus successive calls to and set and
return the state of a single timer. In addition, sets the timer interval to zero.
RETURN VALUE
returns the amount of time previously remaining in the alarm clock of the calling process.
WARNINGS
In some implementations, error bounds for alarm are -1, +0 seconds (for the posting of the alarm, not the restart of the process). Thus a
delay of 1 second can return immediately. The routine can be used to create a more precise delay.
SEE ALSO sleep(1), exec(2), getitimer(2), pause(2), signal(5), sleep(3C).
STANDARDS CONFORMANCE alarm(2)
Check Out this Related Man Page
ALARM(2) Linux Programmer's Manual ALARM(2)NAME
alarm - set an alarm clock for delivery of a signal
SYNOPSIS
#include <unistd.h>
unsigned int alarm(unsigned int seconds);
DESCRIPTION
alarm arranges for a SIGALRM signal to be delivered to the process in seconds seconds.
If seconds is zero, no new alarm is scheduled.
In any event any previously set alarm is cancelled.
RETURN VALUE
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.
NOTES
alarm and setitimer share the same timer; calls to one will interfere with use of the other.
sleep() may be implemented using SIGALRM; mixing calls to alarm() and sleep() is a bad idea.
Scheduling delays can, as ever, cause the execution of the process to be delayed by an arbitrary amount of time.
CONFORMING TO
SVr4, SVID, POSIX, X/OPEN, BSD 4.3
SEE ALSO setitimer(2), signal(2), sigaction(2), gettimeofday(2), select(2), pause(2), sleep(3)Linux 1993-07-21 ALARM(2)
I have a Solaris 2.6 machine and I execute the following:
while
do
echo looping
sleep 15
done
I would assume the looping would be printed every 15 seconds but it doesn't. consecutive looping gets printed without a 15 second gap. Any idea what might be the reason ?
Thanks (9 Replies)
Is there a imbedded command (Solaris v8 ksh) that will send an administrative alert/alarm. Or is it just triggering a mail message via shell script? If no, is there a good open-source code someone knows about?
Thanks so much in advance for any replies.
...Gozer13 (3 Replies)
I am trying to write a signal to exit when a process times out. What I have come up with from poking around the web is this.
#!/usr/bin/perl
eval {
local $SIG{ALRM} = sub { die "alarm clock restart" };
alarm 10;
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How to delay a process.
I need to to delay a process from 3sec.
At that 3sec other back ground processes also should stop.
(just sit 3sec for idle & then starts execution as normally)
I use sleep(3)-But it not stop the bg processes
I try to use loop but it not gurantee to wait 3sec.
... (2 Replies)
Hello,
I'm kind of new to autosys, but I'm assuming there is a way to have Alarms be emailed instead of having to run jobscape and click the Alarm button to see what jobs have failed? Does anyone have an insight onto how this can be done? Thanks. (14 Replies)
I am trying to write a program that will;
1) Show the message "Snoozing now...zzzz" on the screen for 5 seconds
2) Then in the same position show the message "The ALARM is going off now!" for 5 seconds
3) Repeat 1) then 2) infinitely until user presses Ctrl C
I can't make it work. Any hints... (17 Replies)
Dear,
I have a alarm text file, containing minor and major alarms, i am intrested in Mojor alarm with its alarm header and next four lines in seperate file....
Can anybody help me with this below is the alarm file output.
:SEV="MAJOR":
Object-Instance %
unit-type % bts nbr % 25
... (5 Replies)
Dear Sirs,
I want to write a script as an automatic action when I receive an alarm from a specific application.
There are some variables attached to this alarm, one of them is an (ID) that represents some data.
Example:
ID Responder COS
5 6OCT2-R50C-GZ-EG Default... (2 Replies)
Please Help me
Question: - we manually moving/removing old files, when we are getting alarm as /dir1/dir2 size greater than 90%.
we manually moving/removing old files and reduce the file size to less than 90%
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I'm trying to run a alarm.sh using crontab, which play a song as
an alarm at 6.15 am. I'm using amixer so that volume increases by 10% in every loop.
My script is the following.
SHELL=/bin/bash
PLAYER=/usr/bin/mplayer
SONG=/home/hbar/Music/song.mp3
DISPLAY=:0.0
15 06 * * *... (10 Replies)
Hi Unix Gurus,
I have a long text file, where alarms events are logged and alarm clear event are logged.
Both events alarm and alarm clear has common identifier as{xxxxxxxxxx}
I need to analyse the time-period for which the alarm sustained.
i.e
Output: timestamp from both event has... (3 Replies)
Hi friends,
I have one unix command which is used to check the network status manually.
followig is the command
check_Network this command give follwoing status
Network 1 is ok
Network 2 is ok
network 3 is ok
network 4 is ok
.
.
.
.
Network 10 is... (8 Replies)
Hi,
I need to create a monitoring alarm script which would check if the log file has been updated in the last one hour or not.
I tried using -cmin however, one environment supports it where as the other does not.
I would really need some help here!!! (2 Replies)
I would like to add the ability to change the message that is displayed when timer is finished. At present it just asks for the time I want for the alarm.
I think what I need is another command line argument.
soundfile="/usr/share/sounds/My_Sounds/Alarm-sound-buzzer.mp3"... (5 Replies)