Here is a little simulation of what you are trying to do :
Make a file and simulate a process on it
Now launch an "almost" endless loop that check every 10 sec if there is a process on it :
... so far nothing happen : the process is still on the file, the loop see it and continue its check every 10sec check.
In another tty, i do a
on the tail -f process (pid=9854) see in you first window :
When the loop detects that no more pid is on the file, it echo "ended" and breaks out the loop
---------- Post updated at 08:28 PM ---------- Previous update was at 08:22 PM ----------
Note that you can also
Of course those code are poor, i don't checksum nor check size nor check return code, but this was just a simple example for training purpose
I'ld like to enable file name completion in ksh88 on AIX 5.2. My terminal is set to xterm. I've set the shell editor to emacs and ampped the arrow keys. Is there a way to map the tab key to a command like ESC= or any other file name completion command in emacvs that I may be not aware of since I'm... (1 Reply)
:cool:
I need to execute a shell script to do the following:
cat a file
run two back ground processes using the first two values from the file
wait till those background processes finish
run two more background processes using the next two values from the file
wait till those background... (1 Reply)
Did not use 'wait' yet.
How I understand by now the wait works only for child processes, started background.
Is there any other way to watch completion of any, not related process (at least, a process, owned by the same user?)
I need to start a background process, witch will be waiting... (2 Replies)
hello,
I have been trying for a couple days to figure this out to no avail. I am converting some csh code to bash. I have converted everything except the completion code.
#bashrc (I set this alias in my bashrc)
alias test='source ${PATH}/test.sh'
#${PATH}/test.sh (returns some aliases and... (0 Replies)
Hi,
I am facing a strange issue,
when i call a script from my while loop in background it doesnt go in background, despite the wait i put below the whil loop it goes forward even before the process put in background is completed.
cat abc.txt | while read -u4 line
do
#if line contains #... (2 Replies)
Is there a way to get my script to only trigger when a .ppt is created?
#!/bin/bash
while inotifywait -e create /ticker/powerpointshare;
do
sleep 30;
sudo chmod -R 777 /ticker/powerpointshare/*.*;
sleep 15;
sudo reboot;
done
I'm not sure if this is even possible... (0 Replies)
Hi,
I want to monitor any new file to be created in some of the directory using inotifywait tool but this is not available in Redhat 5.6.
Could you please let me know how to achieve (monitoring of file) without using inotifywait too? Because i dnt want to install this tool due to some reason.... (1 Reply)
I'm trying to improve a script that I have running on a Ubuntu desktop that basically runs a powerpoint presentaions with announcements to TV's in diffrent parts of our building. My current script uses WINE to execute powerpoint viewer.
The scripts that I currently use relies on inotifywait's... (1 Reply)
Hello
I've followed several bash-completion threads, usualy none were answered, because of obvious reasons. (of which i'm just aware since a day or a few)
Non-the-less, because i was writing scripts, i never considered it to be possible to add this functionality.
Also, because i though that... (0 Replies)
Hi, maybe someone could help me optimizing this little script.
It works so far, but when running, reboot does not work. If kill inotifywait reboot from shell works. I think some optimization is required here.
This script starts at the end of the boot process, from an external device and... (3 Replies)
Discussion started by: lowmaster
3 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)