IF you are at the command line, CTRL-C will stop the command - unless watch is called from inside a shell script with SIGINT trapped. (bash or ksh trap command)
If watch is a separate process,
where pid == process id of the process will terminate the process.
On Linux I could use the `watch` command to loop a command X times. Is there a similar command on AIX? If not, is there a way to write a loop on the command line to do this?
Linux: watch -d -n 60 'db2 list applications show detail | grep Connect | wc -l'
AIX: ??? (2 Replies)
Hi Experts,,
Can you tell me "Is there any command in solaris that gives the output repeatedly for every x seconds" when used with other commands like ls,du,df,etc..Like prstat updates its output for every 5 seconds..
If i want to view how much of disk usage is going on a filesystem for every... (2 Replies)
Hi there,
I was wondering if there was a way in UNIX that I could set up a running script that monitors a certain folder (and all the folders and files contained within it) so that if any file changes then it will be the change logged within a log file. I dont know if this is possible in Unix... (6 Replies)
Hi all,
I am trying to create a file that shows the CPU usage, constantly updating (similar to TOP).
So far i have a file (called test) containing:
echo "The current CPU usage is:" `ps -e -o pcpu|awk 'NR > 0 { s +=$1 }; END {print s"%"}'`
and then I ran the command:
watch -d 0.5 -t... (3 Replies)
watch is a common linux command that executes a program periodically, showing output fullscreen.
I couldn't find anything for hpux, so I created the following shell which the user is testing:
cat /usr/bin/watch
#!/bin/sh
while ; do
clear
echo "Command: $*"
date
echo ""
... (2 Replies)
Hi
I want to write a script, help me to monitor command output.
This script like Linux "watch" command.
Below is my script:
# cat watch.sh
#!/bin/bash
while true
do
clear
echo "command: $*"
( $* )
sleep 2
done
Then I run this script below (2 Replies)
so i have a very long script which i have to run. when i run this script, i want to monitor the the openssl commands it runs.
the way ive attempted to do this is:
watch -t -n 1 "(date '+TIME:%H:%M:%S' ; ps aux | egrep openssl | egrep -v grep)" 2>&1 | tee -a logfile
the above command is... (2 Replies)
Discussion started by: SkySmart
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)