Have a need to schedule programs that can run after other programs are completed. Here's the catch:
1) The list of programs will not always be the same (kind of a plug-n-play deal)
2) The invoking shell may not be the same as the shell of the program being waited on
In other words, I need... (2 Replies)
As far as I can tell, the bash wait command waits for a logical "AND" of all the child processes.
Assuming I am coding in C:
(1) What is the function I would use to create multiple bash child process running perl?
(2) What is the function I would use to reinvent the bash wait command so I... (4 Replies)
Hi All
Here i have a piece of code,
set filename "./GopiRun.sh"
#I need to wait here until the GopiRun.sh is completed how do i achive this
exit. (1 Reply)
Hi
I have a shell script A which calls another 10 shell scripts which run in background. How do i make the parent script wait for the child scripts complete, or in other words, i must be able to do a grep of parent script to find out if the child scripts are still running.
My Code:
... (1 Reply)
I am trying to find a list of files and writing it to a text file. Based on the machine performance the file writing will be slow at certain time.
The code to find file and redirecting the output to text file is on a shell script
/usr/bin/find $SEARCH_DIR -daystart \( \( -name 'KI*' -a... (4 Replies)
Hello. I want to make a child do some stuff,wait,then the parent does some stuff and then child does some stuff and waits again.I have made the following but it does not work.Can anybody help me?
pid1 = fork();
if (pid1 == -1)
{
perror("Can't create child\n");
... (18 Replies)
I have the shell script to call a Perl routine and pass the Informatica WorkFlow name to it. Jobs in each group executes in background do not seem to wait at all. How do I make it to WAIT for the prior group to complete before execute the next group of jobs?
Sample of the jobs flow:
{
... (6 Replies)
Hey all,
I want to automate tarring a directory then using ftp to transfer the files over.
I was able to put the commands together but what I'm noticing is that only the very first file is being tarred and then transferred.
tar cvpf new.backup sourceAbove is the command I'm using which works... (4 Replies)
Hi all,
I am starting mgen5 for sometime depends on input from a file, in a child process. now I want to make parent to wait in this child process till mgen5 finishes, or timeout happens.
could anyone please tell me how to make parent to wait in child process in shell script?
thanks... (2 Replies)
Hi
I am facing a problem in my ksh.
My main script is calling 3 different child process in the background.
I am using wait to finish all and then submit another 3 child processes.
Now what i want is , whenever any one child process finishes ,i want to submit next one.so that parallel 3... (2 Replies)
Discussion started by: Sangu
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)