I am trying to edit multiple files from one directory and including all the files in all the sub directories. My string opens each file, puts the text on my screen and does not save the new information to the file. I am using a variable in my script, and wondering if that is what is choking it. ... (1 Reply)
hi guys,
We have to implement new local (/etc/default/login) USER security policy on almost 50 stations.
so editing /etc/default/login and /etc/default/passwd will be way too long work.
Can we do the same using some script, I mean editing the above files and putting variables as RETRIES=3, ... (5 Replies)
hey guys,
I'm trying to call and modify multiple files inside the for loop, i can't get it to work...
------------------------
AFILE=/dir/a_file.txt
BFILE=/dir/b_file.txt
CFILE=/dir/c_file.txt
ADESTFILE=/dir/a_dest_file.txt
BDESTFILE=/dir/b_dest_file.txt... (6 Replies)
Hello Gyues!
I would like to use awk to perform data extraction from several files. The data files look like this:
DWT26R 1 PEP1 CA 1 OH2 SKIPPED: 0 STEP: 1
0.29000E+01 0.55005E-02 0.60012E-03
0.30000E+01 0.11149E+00 0.13603E-01
0.31000E+01 0.39719E+00 0.63013E-01
0.32000E+01... (9 Replies)
I have 1000's of directories which is named as numbers. Each directory contains multiple files. Each of these directories have a file named "att". I need to rename all the att files by adding the directory name followed by "_" then att for each of the directories.
Directories
120
att... (2 Replies)
I have 150 files with 4 columns each but variable row lengths that I need to combine by column. I do not have any common column. I want to use "paste " command in unix to do it but before that I have to get all my files to be of equal length.
Is there a way using awk or sed to fill up n no. of... (7 Replies)
Hello everyone,
The following are my input files.
The following are my sequence of steps.
Can someone please let me know about how to make these bunch of steps into a single script so that I start the script with 1.txt and 2.txt, after execution gives me the final... (11 Replies)
Hi,
Can any gurus advise why :p is not working on my vi?
When editing multiple files, :n works and it takes me the next file, but :p which is supposed to take me back to the previous file does not work.
Please advise. Thanks in advance. (2 Replies)
#!/bin/bash
#
name=$1
type=$2
number=1
for file in ./**
do
if
then
filenumber=00$number
elif
then
filenumber=0$number
fi
tempname="$name""$filenumber"."$type"
if (4 Replies)
Hi All,
I would need your assistance to make a bootable USB with SUSE LINUX Enterprise Server
I have already downloaded relevant OS (Trail Version) packages @
1) SLES-11-SP4-DVD-i586-GM-DVD1
2) SLES-11-SP4-DVD-i586-GM-DVD2
when I tried to open these packages with PowerISO one of the... (7 Replies)
Discussion started by: Leaner_963
7 Replies
LEARN ABOUT DEBIAN
io::pipe
IO::Pipe(3perl) Perl Programmers Reference Guide IO::Pipe(3perl)NAME
IO::Pipe - supply object methods for pipes
SYNOPSIS
use IO::Pipe;
$pipe = IO::Pipe->new();
if($pid = fork()) { # Parent
$pipe->reader();
while(<$pipe>) {
...
}
}
elsif(defined $pid) { # Child
$pipe->writer();
print $pipe ...
}
or
$pipe = IO::Pipe->new();
$pipe->reader(qw(ls -l));
while(<$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 v5.14.2 2011-09-19 IO::Pipe(3perl)