OK... I'm fairly new to unix having the admin handed to me on a platter w/almost no training.
However, being a programmer, I do pick up things fairly easily, but this one is getting the best of me.
I have a unix server that runs multiple versions of the same ERP system, hand crafted for our... (1 Reply)
Hi all
I have a little brainscratcher here.
I want to draw a pie chart from data in a text file.
The drawing of the graph works fine, if I insert the data manually into a 2d array.
Now I want to pull the data from a text file (which was created using a uniq -c command) see sample below.... (2 Replies)
Hello all:
I have a following textfile data with name inst1.txt
HDR|ABCD|10-13-2008 to 10-19-2008.txt|10-19-2008|XYZ
DTL|H|5464-1|0|02-02-2008|02-03-2008||||F|||||||||
DTL|D|5464-1|1|02-02-2008|02-03-2008|1||JJJ
DTL|D|5464-1|2|02-02-2008|02-03-2008|1||JJJ... (9 Replies)
Hi,
I want to replace a field in a text delimited file with the actual number of records in the same file.
HDR|ABCD|10-13-2008 to 10-19-2008.txt|10-19-2008|XYZ
DTL|0|5464-1|0|02-02-2008|02-03-2008||||F|||||||||
DTL|1|5464-1|1|02-02-2008|02-03-2008|1||JJJ... (3 Replies)
Hi Folks,
very basic question, how to do command piping for an array?
suppose i have names as an array, when I write this script:
#!/usr/bin/sh
date=`date +%y%m%d`;
names="a b"
for name in ${names}
do extract -tz +8 person 'income$|expense$' /home/ricki/$name/$date*.xml | tab -d -cols... (1 Reply)
Hello,
I am trying to make a bash script that can pull data from a file and then change one part of said data.
I want to search by username and pull the full line. That way there is a way to replace just one part of that line then return it back to the file.
My Data is stored like:
... (1 Reply)
this is Korn shell unix.
The scenario is I have a pipe delimited text file which needs to be customized. say for example,I have a pipe delimited text file with 15 columns(| delimited) and 200 rows. currently the 11th and 12th column has null values for all the records(there are other null columns... (4 Replies)
Hello all, I have two files which are cmd and disk.
`$cat cmd
lsdev | grep -iw`
`$cat disk
hdisk2`
Now I want to use the contents of both the files in a way such that `lsdev | grep -iw` command works for hdisk2 when I write the following script:
`!#/bin/sh
cmd1="$( sed -n... (4 Replies)
Hello,
I have standard loop
while read -r info; do
command $info
done < info
in info text file I have multiple commands each on line that I want to execute. When I used them in console they worked, but not with this loop.
This is one of the commands in info file:
grep... (4 Replies)
Discussion started by: adamlevine
4 Replies
LEARN ABOUT SUSE
io::pipe
IO::Pipe(3pm) Perl Programmers Reference Guide IO::Pipe(3pm)NAME
IO::Pipe - supply object methods for pipes
SYNOPSIS
use IO::Pipe;
$pipe = new IO::Pipe;
if($pid = fork()) { # Parent
$pipe->reader();
while(<$pipe>) {
...
}
}
elsif(defined $pid) { # Child
$pipe->writer();
print $pipe ...
}
or
$pipe = new IO::Pipe;
$pipe->reader(qw(ls -l));
while(<$pipe>) {
...
}
DESCRIPTION
"IO::Pipe" provides an interface to creating pipes between processes.
CONSTRUCTOR
new ( [READER, WRITER] )
Creates an "IO::Pipe", which is a reference to a newly created symbol (see the "Symbol" package). "IO::Pipe::new" optionally takes two
arguments, which should be objects blessed into "IO::Handle", or a subclass thereof. These two objects will be used for the system call
to "pipe". If no arguments are given then method "handles" is called on the new "IO::Pipe" object.
These two handles are held in the array part of the GLOB until either "reader" or "writer" is called.
METHODS
reader ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the reading end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
writer ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the writing end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
handles ()
This method is called during construction by "IO::Pipe::new" on the newly created "IO::Pipe" object. It returns an array of two objects
blessed into "IO::Pipe::End", or a subclass thereof.
SEE ALSO
IO::Handle
AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perl5-porters@perl.org>.
COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
perl v5.12.1 2010-04-26 IO::Pipe(3pm)