I am trying to send a SIGUSR1 to a set of process. Please tell
me how to do. I've tried the system call raise(int sig) but it just
raise a signal of to the 'current process.'
My program is about a network chat server. When a client
connects in, The main process will fork a new process... (1 Reply)
Hi All,
Please help to write the script that should raise an alarm if the new logs will not come in the log file.
In other words i want to write a script which will monitor the log file continuously and will raise an alarm if the logs will not come after some time suppose 5... (5 Replies)
Hi members, I am working in WebSphere in Unix environment. we are working with 500 odd servers and most of the times processes got down. Can i have any shell script through whih some popup with alarm get raised whenever some server get down. kindly help.. Thanks Rishi (1 Reply)
Hi Friends,
I've an exponent value like,
$val="9.57669e-05";
I want to convert this value to floating point value in PERL scripting.
I tried googling for the solution, and also asked many perl friends. Unfortunately, I didn't get answer.
Could you please help me?
Thanks in advance... (4 Replies)
Hello All,
I am currently having an issue displaying a exponent value using perl,
I have a perl program which generates an xls file. This xls is populated with values from a database. But for a certain column which I have made explicitely text and also implemented keep_leading_zeroes()... (3 Replies)
Hello All,
In ksh I am trying to ensure that user inputs are integers otherwise redisplay prompt with the following code;
a=0
b=0
c=0
read b?"Please enter a number: "
read c?"Please enter another number: "
while ] && ]; do
read b?"Not a number. Please enter a number: "
read c?"Not... (4 Replies)
Example:
I have server name A with an IP : 125.252.235.455
I have an username /password to login into this server under SSH connection
In this server i have a path /apps/user/filename(Big.txt)
Everyday we used to get the filename as Big.txt.
I want a shell script to monitor this path... (4 Replies)
Input data:
I'd like to calculate using value in second column. The value needs to be created using a formula, that employs exp (that is e raise to the power).
awk '{
if(FNR==1){
##if first line than print as is and add third column
print $0,"weight"
}
else{
if($2<=0.01){... (2 Replies)
Discussion started by: genome
2 Replies
LEARN ABOUT DEBIAN
io::async::signal
IO::Async::Signal(3pm) User Contributed Perl Documentation IO::Async::Signal(3pm)NAME
"IO::Async::Signal" - event callback on receipt of a POSIX signal
SYNOPSIS
use IO::Async::Signal;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $signal = IO::Async::Signal->new(
name => "HUP",
on_receipt => sub {
print "I caught SIGHUP
";
},
);
$loop->add( $signal );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a particular POSIX signal is received.
Multiple objects can be added to a "Loop" that all watch for the same signal. The callback functions will all be invoked, in no particular
order.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_receipt
Invoked when the signal is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
name => STRING
The name of the signal to watch. This should be a bare name like "TERM". Can only be given at construction time.
on_receipt => CODE
CODE reference for the "on_receipt" event.
Once constructed, the "Signal" will need to be added to the "Loop" before it will work.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Signal(3pm)