04-04-2005
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
HI ALL
How to read first 10 line from a file using any method (5 Replies)
Discussion started by: aliahsan81
5 Replies
2. Shell Programming and Scripting
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Discussion started by: rethink
4 Replies
3. Shell Programming and Scripting
I'm improving the way an existing script handles arrays, but the results aren't what I had in mind:
e="Too many consecutive errors... System is probably unstable!"
e="Cancelable Timer Wait Failed!"
for errcd in ${e}
do
echo ${errcd}
done
The for loop interprets the spaces... (2 Replies)
Discussion started by: ironhalo
2 Replies
4. Shell Programming and Scripting
hey guys what im trying to do is do a simple script that will ask for a password and on the 5th time it says access denied if the right password is still not entered this is what i have so far can anyone help me im not good with scripting
thanks in advance
#!/bin/bash
secretname=secret... (2 Replies)
Discussion started by: randallrivy11
2 Replies
5. Shell Programming and Scripting
I am struggling with the for loop. I have a file name heros.txt and I would like to go through a list in file where.txt and see if I can find the name from where inside heros.
One of the problems that I am having is I dont understand how to setup the for loop to find the list to search.:wall:
... (6 Replies)
Discussion started by: captaindoogles
6 Replies
6. Shell Programming and Scripting
Hi,
I'm trying to put together a small script that will read a txt file that contains a list of two columns. Each column is the name of a folder..
e.g.
AIX Server1
AIX Server2
AIX Server3
$ for i in `cat /opt/apacheprod/scripts/input/copy_list.txt`
do
PLATFORMVAR=`awk ' { print $1 } '... (7 Replies)
Discussion started by: Jazmania
7 Replies
7. Shell Programming and Scripting
I have two files. In file one, there are many columns, but only two of interest to me. Column 1 contains a list of individuals, defined by an ID number. Column 10 contains the diagnosis that each individual has (I am a physician). All together, there are 3000 lines in this file, one line per... (2 Replies)
Discussion started by: awc228
2 Replies
8. Shell Programming and Scripting
Hi,
I have a requirement where I have to check for 10 files in Unix location. If all of the files present in that directory then i have execute another process.
can you help me resolving this issue.
sample
location
/home/usr
abc.txt
cde.txt
aaaa.txt
lll.txt
ooo.txt
if all the... (3 Replies)
Discussion started by: manasvi24
3 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I would really appreciate some help with manipulating a file.
Here is my input file:
SNP_1 : 1 SNP_11 : 1
SNP_2 -0.12 1 SNP_12 -0.3472 1
SNP_3 -0.708 1 SNP_13 0.5037 1
SNP_4 1.492 0.5 SNP_14 -0.0685 1
SNP_5 1.27 0.5 SNP_15 0.547 ... (3 Replies)
Discussion started by: zajtat
3 Replies
10. UNIX for Dummies Questions & Answers
Hi,
I have code like below
disk_list=$(ls /root/file1)
for disk in $disk_list
do
pvcreate $i
done
I know what pvcreate command does, but I do not understand what this $i do here. can someone please explain. (2 Replies)
Discussion started by: stew
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)