The first command in this list sets the variable PID to the exit status of the previous command (echo "$line") which is almost always going to be 0. The second command causes the script to wait for about 2 seconds. Then the third command (after parameter expansion) is:
Code:
kill -9 0
This is a request to terminate all processes in the current process group. On most systems, killing all processes in the current process group includes killing the shell that is running this script.
I hope someone can shed any light on this mystery.
I am trying to run the following command:
su userID -c
remsh server -l userid -n "awk -F^ '\$4 == \"SMITH\"' /tmp/infromational/version74b/LIVE/TEMPORARY/ABCfiles/HLC_Database_File.bat|head -1" > /tmp/variant/45BV32/var/store13.logfnd
I... (15 Replies)
Hi All,
I have list of 100 table names in a file, how to read table name from and pass to DB2 export command and run for all tables in loop.
Please help me with script.
db2 EXPORT TO ~/data_export/<table name from file>.ixf OF IXF MESSAGES messages.txt "SELECT * FROM ITG.<Table Name... (4 Replies)
Hi everyone,
when executing this command in unix:
echo "WM7 Fatal Alerts:", $(cat query1.txt) > a.csvIt works fine, but running this command in a shell script gives an error saying that there's a syntax error.
here is content of my script:
tdbsrvr$ vi hc.sh
"hc.sh" 22 lines, 509... (4 Replies)
Hey, I am trying to write a script that will open all of my session windows, and then secure shell into the appropriate server in the new windows. Seems simple, but I cant get it to work! Please help! :confused: (1 Reply)
Hi,
Not sure what the issue is here, but when i run the script. A simple copy command, it does not find the cp command ? See scrpt below :
#!/bin/sh
set -x
#############################################
# Backup Processes #... (4 Replies)
The command is:
sic -h irc.freenode.net 2>&1 | tee -a irc.log
Where sic is an IRC client, and I'm piping the output to tee in order to log my IRC sessions.
I'm trying to handle reconnects by running it in a while loop in the shell process and cat the initial commands into sic's stdin.
I... (1 Reply)
Dear All,
Writing a script in which I want to run a command in background and keep it running even script is finished.
I have tried like below,
`truss -p <pid> >> & /tmp/log &`
But doesnt work.. script goes running and nothing in log file. (7 Replies)
Hi,
I have run a lot of commands one after one,
but I can't run them simultaneous.
One command has to run and when finished second command has to run etc.
Also I would like to save all the outputs created by the commands in a file.
The commands can sometimes take hours, so it is also... (10 Replies)
hello
i have write a script which can create username + password
#!/bin/bash
# Script to add a user to Linux system
if ; then
read -p "Enter username : " username
read -s -p "Enter password : " password
egrep "^$username" /etc/passwd >/dev/null
if ; then... (3 Replies)
Dear folks
I have two data set which there names are "final.map" and "1.geno" and look like this structures:
final.map:
gi|358485511|ref|NC_006088.3| 2044
gi|358485511|ref|NC_006088.3| 2048
gi|358485511|ref|NC_006088.3| 2187
gi|358485511|ref|NC_006088.3| 17654
... (2 Replies)
Discussion started by: sajmar
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)