Perl is a powerful, high level programming language. Questions about Perl should be limited to the Perl development environment, running Perl, or using Perl to automate tasks on your computer.

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15 views

How to match parameter and replace the value after “=” separator

the perl one liner command to replace Value in file is simple: perl -i 's/oldval/newval/g' file.txt but what should be the perl one liner syntax in case we want to replace the value on specific ...
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24 views

I added a simple socket perl server script under Cygwin Xinetd to echo client input but it reads blank instead

I installed a x32 version 1.7.33 of Cygwin on my x64 Windows7 machine. I added a new service under /etc/xinetd.d/ccapi. $ cat ccapi-stream service ccapi { id = ccapi-stream disable = ...
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1answer
41 views

search and replace string using batch or perl script

How can i search for "//packages/thirdparty/release/main.txt #10" and replace #10 with #15(set VARIABLE="#15") using batch commands and also ignoring spaces. #10 can be anything, lets assume #XXX. ...
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1answer
12 views

Using perl regex over mutlple lines

I'd like to replace all occurrences of this in a file: ab ba With this: a a I tried the obvious: $ perl -i -p -e 's/ab\nba/a a/' file.txt With no success. How is this done? I can't find any ...
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1answer
49 views

how to view all process details from ps –ef command

I am using the ack.pl in my bash script to search IP's in the Linux OS only for example , and only to show the problem I will give here a short example # ( ./ack.pl -Q -a -l --max-count=1 ...
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1answer
29 views

Decode QR from image (or how to run Exec in a loop)

I need to decode a folder full of QR code from image files. After A LOT of research, I finally found a libary that works on Windows. Not my ideal choice (Zbar won't install on Strawberry PERL as ...
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2answers
30 views

Copy sequential files into sequential directories

I need to copy multiple, sequential files into sequential directories. The files have the julian date (day of year) with other info in the file name. The directories are listed by julian date (day of ...
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35 views

ArchLinux can't install perl-wx

I am trying to install perl-wx from the AUR Repo with yaourt, but can't get it to work. I have tried "export LC_ALL=C". Still an error occurred during the check. Maybe you can help me? Pastebin: ...
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1answer
29 views

Executing Perl command from shell script not resulting into anything

I am trying to execute the below command from a shell script: perl -pi -e 's/Ç/|/g' diff_new_old.dat This command gets executed without any errors, but the execution doesn't do the intended ...
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2answers
132 views

Making a juniper VPN work on linux

I've tried several tools, the original scripts (ncsvc and ncui) do not output any error message to know what wrong with connection, even with wireshark I could not know what was wrong. The best tool I ...
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1answer
31 views

OSX 10.10 select perl 5.16 instead of 5.18

I find that my OSX 10.10 comes with perl 5.16 and 5.18. By default, when I run perl, I am using perl 5.18. Is there way for me to run perl 5.16 when I run perl command? admins-Mac-mini:~ ...
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2answers
105 views

How to call perl file every minute from batch file

I have written a perl script which i try to call every 1 minute from a batch file. There is no error but it do not call it every 1 minute. It just pop command prompt when clicked once on .bat file. ...
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1answer
58 views

How to delete a particular line in a text file after some operation on that text file at the same time

I am perl bginner (but i guess logic is same for all programming languages like C++ and C in my case its perl). What i want to achieve ? I have a text file i read that file which contains different ...
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1answer
44 views

How to get the count of a string from a text file . The output is wrong

I have written a code for finding the IP address count from a text file. if similar IP dress exist in file toto.txt : My code to do this is: use strict; use warnings; my %count; my $str ; #my $file ...
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1answer
81 views

How to stop a running .bat file which runs after every 10 minutes

I have written a .bat file which runs every 10 minute. The problem is now when i want to stop it it never stops. (This .bat file further calls a perl file in the code). What can be done to kill it ? ...
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1answer
139 views

mod_perl not active on Apache/2.2.15 (Red Hat)

I am using OTRS on a RedHat 6.5 with apache2 and mod_perl2. One of my servers (Sandbox environment) has the following (yum info feedback): Installed Packages Name : httpd Arch : x86_64 ...
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23 views

when istall latexml from cpan or cpanm, it just cannot find the package

cpanm output cpanm latexml ! Finding latexml on cpanmetadb failed. ! Finding latexml () on mirror http://www.cpan.org failed. ! Couldn't find module or a distribution latexml cpanm LaTeXML ! Finding ...
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1answer
147 views

When trying to start Apache - Cant load “Magick.dll” for module Image::Magick?

I have ActiveState Perl 5.10 installed on Windows 2008 machine. I installed ImageMagick-6.8.7-9 Q16 (32-bit) installed. Instead of using ppm to install PerlMagick I built it myself using dmake and gcc ...
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2answers
43 views

Text deletion between patterns across multiple lines with respect to text inside pattern

I have a block of text I need to delete, however, only if it contains specific text inside the block: ... <script language="JavaScript"> var somethingA = 0; var somethingB = 0; var ...
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2answers
50 views

Replacing several strings in a file in one go

Suppose I want to replace all AAA with BBB and all BBB with AAA in a text file. The thing which looks an obvious solution (in Perl or in Sed) is: s/AAA/BBB/g; s/BBB/AAA/g; But this does not ...
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1answer
38 views

What are MINIMAL necessary reqirements to run Perl CGI scripts on Apache server?

I have my Apache showing perl scripts as plaint text, not executing them. Googling and playing with settings made me frustrating, because there are numerous and long samples, which are mostly ignored ...
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1answer
111 views

FreeBSD make error - File 5.19 supports only version 12 magic files. /usr/share/misc/magic.mgc is version 8?

I'm having trouble reinstalling ProFTPD on a FreeBSD 10.1 setup. The server is newly upgraded from 10.0 to 10.1. When I start the make install clean process, these warnings first shows on screen. ...
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1answer
31 views

How can I run this Perl script in Windows?

I am trying to run a PERL script for the first time. Here it is : http://search.cpan.org/dist/HTML-ExtractMain/lib/HTML/ExtractMain.pm I have never used or worked with PERL before and I am finding ...
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1answer
78 views

Amavis - How to blacklist using regex, from an external file

I currently have this line in my amavis user config file: # BLACKLIST read_hash(\%blacklist_sender, '/etc/amavis/blacklist'); It works fine with entries such as: .baddomain.net .spam-galore.net ...
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2answers
40 views

Make perl regex search exit with failure if not found

With grep I get a failure return code/exit status if no result is found. How can I do the same thing with perl? Basically, I would like to change the following so that it exits with status 1 if no ...
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1answer
12 views

Where can I see the log statements of a task in Windows 8?

I created a task in task scheduler which essentially runs a perl script. I have some print/log statements in the script. Where can I see these log statements?
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1answer
19 views

i need to pass a string of an output file to a variable so as i can use it globally all over my script [closed]

sample output RETENTION_INTERVAL ------------------ 10080 I need to pass the numeric value "10080" from the output file to a variable .The condition should validate value and ...
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39 views

Monitoring a log file and send a notification (mail) when string is triggered

I want a nofitication (email) when the user-foobar is triggerd in the apache log like this 10.10.55.171 - userfoobar [21/Nov/2014:12:06:01 +0100] "GET /download/2719/test.jpg HTTP/1.1" 200 ...
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15 views

Using exif and regex in perl to determine if video has an audio track

I am currently using exif to get info about a video file in PERL. I am running this command to do so: $cmd1 = "/usr/local/bin/Image-ExifTool-9.08/exiftool $therow->{'FileName'}.mp4"; $output = ...
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115 views

PowerShell issues with spaces in directory names

PowerShell has issues with spaces in directory names. I am trying to execute a file in the same directory as the PS1 script like so: .\getGravatarsForGource.pl It works fine when the directory ...
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2answers
42 views

How can I set a count down timer in perl for doing a function repeatedly?

I am copying a file from one file to another. I want to check whether the source file is available or not repeatedly in every 10 secs. How can I check it in between copying?
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1answer
30 views

How to wait for 3 mints if the n/w got disconnected while copying in Rsync without failing using perl script?

I have to transfer 2-3 GB using Rsync.Everything is working fine, but my network got disconnected sometimes, and the entire process got failed. I want to retry it for the network for every 3 mints, ...
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24 views

safe-mode and its effects on vhosts - why does turning off help

on a root server - with several domains with different vhost (configurations) i run several wordpress on domains - and wthin the wordpress i have a plugin that allows uploads of images -within a ...
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1answer
142 views

How do I use MacPorts' Perl installation with MAMP?

I have MAMP 3.0.6 and MacPorts 2.3.1. There are some Perl modules that I need to use (through some CGI scripts), I installed them on the MacPorts Perl installation (e.g., p5.16-dbd-mysql), but I can't ...
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1answer
506 views

Error while installing Perl package Term::ReadKey in Cygwin

I'm trying to use git via cygwin Well, I used this command to clone the svn content to a local git repository: git svn clone svn://path/to/my/project --username myuser Git was returning: ...
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1answer
214 views

Missing Switch module on exiting Perl installation

I have been working on a Linux 64bit cluster for months, and this morning it seems as if the Switch module for Perl has disappeared from the system. If I do a find on the place where I expect it to ...
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2answers
35 views

how to split a hex file into two hex files at the first match of certain criteria in perl or just unix scripts

I have a HEX file containing following, I want to split them into two HEX files based on the address: file_in.hex @00000000 00 FC 00 20 89 01 00 00 D9 01 00 00 DB 01 00 00 DD 01 00 00 DF 01 00 00 E1 ...
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1answer
81 views

Wrong apache configuration. Perl scripts cannot execute

I've got wrong apache configuration. My script don't want to be executed and browser trying to download it as a file. <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName president.com ...
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2answers
628 views

How to execute a PL file in Linux?

I have a vmware-install.pl file that I need to execute. I double click it but Linux will open it in a text editor for editing. How to execute this file? Can it be done from GUI? In file's properties ...
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0answers
149 views

Autoformat for Perl in Vim

I got a piece of code about perl: if ($a==1){ &err_report("$a"); while($b!=1){ &err_ok(); } } And, I want to format it in vim. After using command: gg=G, the code ...
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25 views

Perl module DBI and DBD::ASAny install failed in windows

While install perl module DBD::ASAny the following error is occurred. How to fix this issue? C:\Users\rajan>cpanm DBI DBI is up to date. (1.631) C:\Users\rajan>cpanm DBD::ASAny --> Working on ...
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13 views

Enable multiverse via script on Ubuntu

I am writing a script which needs to enable multiverse in /etc/apt/sources.list for ubuntu. The script will be run on vps where the multiverse is not present. The script will be run on debian and ...
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1answer
79 views

Replace negative values in a file with zeros

I want to replace all negative values in a file with zeros. How can I do this in awk? I tried with gsub but gsub(-*, 0) doesn't work... Any ideas? My "code" is awk '{gsub($(!/-/),"0",$2); print $1 ...
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4answers
78 views

How to rename a lot of files in bash shell?

Sorry for the question. I searched the internet a lot, but couldn't find an answer which worked (though there were a lot of suggestions). So, I want to rename A LOT of files. Writing all file names ...
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1answer
70 views

Windows Server 2008 R2: perl ppm doesn't see modules unless I'm the system administrator

I just did a fresh install of ActiveState Perl 5.16.3 on a Windows Server 2008 R2 system, and things seemed to go OK until I went to review the installed modules with Perl Package Manager (PPM). When ...
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1answer
81 views

Is it possible to open a port for listening without netcat?

I have a need for a Linux system to listen on a TCP port and dump what it receives to a file and/or stdout. The system does not have netcat installed. I have root permissions, but am not allowed to ...
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1answer
116 views

TC command via webpage as a sudo

The main goal- run a tc command via webpage, starting with: tc qdisc del root dev eth0 (deletes all the filters) Following Simple linux commands from a webpage I am trying to add a tc command, but ...
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1answer
37 views

editing column of a text file

abc.txt consists of two column data as 1 A1021 2 A1021 3 A1022 4 A1022 I want another test file, say pqr.txt (replacing A1021 by 1 and A1022 by 2 and so on). I used the following usual perl ...
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4answers
137 views

Extract lines based on long list of line numbers

I have a long list of line numbers (35389208) that I do not want in my file. By line number I mean the line in my file (e.g. line 277). My list of line numbers I do not want looks like: 277 278 279 ...
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1answer
239 views

How to get list of process ids that are in a given group id

Going by the man page, I would expect this to work: ps ah -o pid,pgrp -G 18322 But this shows exactly the same list as without the -G arguments. I want a saner way to produce this output: ps ah -o ...