Please can someone describe what causes undesired process startup on system console.
ps -ef output is like:
root 1763 1 0 16:22:24 console 0:00 /bin/sh /usr/System........
process is blocking system console for any access (2 Replies)
Hi all,
I wanted a write a script which will start executing whenever a particular process will starts running in a background.
Is there is any way in Unix if a directory contents changed then a signal/Interrupt will generated and by taking status of that interrupt I can execute some scripts.... (11 Replies)
Hi,
I have a strange problem.
In my shell script, i am startting another program (a c++ exe) with nohup .
I am getting the process id of this started process with using $!
I am writing this process id into another file so that i can keep checking for this process ids to check whether the... (2 Replies)
Hi All,
I have two ksh script. 1st script calls the 2nd script and the second script calls an 'C' program.
I want 1st script to wait until the 'C' program completes.
I cant able to get the process id for the 'C' program (child process) to make the 1st script to wait for the second... (7 Replies)
Hey all, I need to launch a script from within 2 other scripts that can run independently of the two parent scripts... Im having a hard time doing this, if anyone knows how please let me know.
More detail.
ScriptA (bash), ScriptB (ksh), ScriptC (bash)
ScriptA, launches ScriptB
ScirptB,... (7 Replies)
Hi All,
Hope this is right area to ask this question.
I have a shell script (bash) "wrapper.sh", which contains few simple shell command
which executes a "server.sh" (conatins code to execute a java server) as a daemon.
Now what I want to kill this "server.sh" so that the server should... (2 Replies)
Hello, everyone.
Here's a program:
pid_t pid = fork();
if (0 == pid) // child process
{
execvp ...;
}
I send a signal (such as SIGINT) to the parent process, the child process receive the signal as well as the parent process.
However I don't want to child process to receive the... (7 Replies)
Hi everyone
i am very new to linux , working on bash shell.
I am trying to solve the given problem
1. Create a process and then create children using fork
2. Check the Status of the application for successful running.
3. Kill all the process(threads) except parent and first child... (2 Replies)
I want to check whether a particular process has started at 10:00a.m or not.
I can check process by ps -fu but dont know how to check it with respect to time. Could anyone help me with this?
---------- Post updated at 11:14 AM ---------- Previous update was at 10:52 AM ----------
can i use... (9 Replies)
Hello,
I want to save pid of a child process but I get empty file.
su myuser -c "nohup ./mydaemon.sh >/dev/null 2>&1 & print $! > mydaemon.pid"
This one works:
nohup ./mydaemon.sh >/dev/null 2>&1 & print $! > mydaemon.pid
Please help. Thank you in advance. (2 Replies)
Discussion started by: vincegata
2 Replies
LEARN ABOUT DEBIAN
io::async::pid
IO::Async::PID(3pm) User Contributed Perl Documentation IO::Async::PID(3pm)NAME
"IO::Async::PID" - event callback on exit of a child process
SYNOPSIS
use IO::Async::PID;
use POSIX qw( WEXITSTATUS );
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $kid = $loop->fork(
code => sub {
print "Child sleeping..
";
sleep 10;
print "Child exiting
";
return 20;
},
);
print "Child process $kid started
";
my $pid = IO::Async::PID->new(
pid => $kid,
on_exit => sub {
my ( $self, $exitcode ) = @_;
printf "Child process %d exited with status %d
",
$self->pid, WEXITSTATUS($exitcode);
},
);
$loop->add( $pid );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a process exits.
For most use cases, a IO::Async::Process object provides more control of setting up the process, connecting filehandles to it, sending data
to and receiving data from it.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_exit $exitcode
Invoked when the watched process exits.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
pid => INT
The process ID to watch. Must be given before the object has been added to the containing "IO::Async::Loop" object.
on_exit => CODE
CODE reference for the "on_exit" event.
Once the "on_exit" continuation has been invoked, the "IO::Async::PID" object is removed from the containing "IO::Async::Loop" object.
METHODS
$process_id = $pid->pid
Returns the underlying process ID
$pid->kill( $signal )
Sends a signal to the process
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::PID(3pm)