UNIX Shell Script to Remove MongoDB Document-Based on Many inputs
Here I am in a position to write a Unix Shell script(.sh) to remove MongoDB collection documents. I know how to remove based on a condition like below and it works for me.
But I need to change the remove statement based on a new parameter ,lets say PID which will receive bunch of inputs(Many PID's).
I don't need to remove the collection based on the Timestamp field ,Instead my condition has to be changed as per my previous statement.
I went through many forums ,But I am not able to get the solution.
Please help me to resolve this in my UNIX shell script.
Sample Data:-
My Collection have an attribute called PID as shown above ,like Timestamp.Where we will store integer kind of values like 1233,1456,4566..etc .So I require to remove documents who has PID as 1233,1456 in my batch dynamically
Last edited by senthilmadhanT; 12-31-2019 at 01:32 AM..
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Discussion started by: akil
5 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)