Perl is a high-level programming language that comes installed by default in Ubuntu. It is well known for it's use for text manipulation, CGI scripts and it's huge community. You can find any modul and many tutorials on http://www.cpan.org/

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18
votes
5answers
1k views

How can I merge files on a line by line basis?

cat file1 foo ice two cat file2 bar cream hundred Desired output: foobar icecream twohundred I already have a solution involving a for loop with sed using the line number of the files, but in ...
15
votes
1answer
22k views

How to set locale?

After a clean Ubuntu Server install, I get the following error when running 'perl'. perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset)...
11
votes
5answers
103k views

How do I update/install Perl

The Perl package is in /usr/bin and is an older version (5.12.4) and the current stable release appears to be 5.14.2. How do I update this version? Root access is required, and I do not want to ...
11
votes
3answers
517 views

Is there a Perl or Python script I can write which can minimize the Gnome terminal window?

I'm on Ubuntu 14.04 with the old-style GNOME setting from the GDM. (I don't like the new Unity interface.) Is there a way I can create a command that I can type in my terminal window to minimize it? ...
9
votes
1answer
12k views

Using Modifiers of Perl-compatible Regex (PCRE) in grep

According to grep --help and man grep, we can use the -P option in order to interpret the pattern as a Perl regular expression (PCRE, to be precise), instead of the default POSIX basic regular ...
7
votes
4answers
1k views

CPAN vs. APT: Conflicts in versions?

I can't find the answer to this anywhere: Does a module installed via APT conflict with one installed via CPAN? Along with that question are these: Where does the installed CPAN modules live? Are ...
7
votes
2answers
9k views

Perl 5.20.1 for Ubuntu 14.04

How to update to the latest perl in ubuntu 14.04 x64? Ive tried via apt and and cpan alredy and core wont update.
6
votes
1answer
15k views

How to create Excel xlsx files from a script?

I'm looking for packages available in Ubuntu main/universe repositories able to create Excel 2007+ xlsx files from a script (python or perl) My requirements: 100% compatible Excel XLSX files. Solid ...
6
votes
2answers
5k views

How do I undo an accidental installation of all Perl modules?

I was attempting to upgrade my Perl modules through CPAN, but I did not supply a regex/module name to upgrade: perl -MCPAN -e 'upgrade'; I can only assume the worst (which seems to be supported by the ...
5
votes
8answers
1k views

How can I delete text that is NOT in quotes or parentheses?

Input: 19. "foo foo" (bar bar) (19) raboof "foo foo" raboof Expected output: "foo foo" (bar bar) (19) "foo foo" As you can see, I would like to keep the double quotes and parentheses. ...
5
votes
1answer
2k views

Rename - what does s// vs y// mean?

The man page (http://manpages.ubuntu.com/manpages/dapper/man1/prename.1.html) gives two examples: rename ’s/\.bak$//’ *.bak rename ’y/A-Z/a-z/’ * So it's either s or y and then /replaceThis/...
4
votes
3answers
1k views

Searching for patterns in csv files

I have file.csv that looks like this 4,6,18,23,26 5,12,19,29,31 2,5,13,16,30 9,10,24,27,32 4,5,10,19,22 4,6,8,10,25 2,3,4,25,11 I want to find some patterns and save them in another log file file....
4
votes
2answers
487 views

Remove all English text and leave Arabic text

This question is a lot like this. I just need a slight modification. I have a csv file that looks like this y(document).ready(function($) { $('#wp_mep_2').mediaelementplayer({ m:1 ...
4
votes
2answers
18k views

Installing libwww-perl on Ubuntu 12.04,SE

I have an Ubuntu 12.04 server edition which I ssh into. I am running Perl scripts on this server but it fails when I load 'use LWP::UserAgent;' with error message: Can't locate LWP/UserAgent.pm in @...
4
votes
1answer
28k views

How to install Perl Switch.pm module required to build WebKit-GTK?

I noticed that the perl version (5.14) shipped with 12.10 does not include the Switch.pm module needed while building WebKiT-GTK. Looking around on the internet I found few suggestions indicating ...
4
votes
1answer
2k views

How do I run asciiquarium in out-of-the-box ubuntu?

Asciiquarium is a perl script that requires Term::Animation. What are the appropriate hoops to jump through to get this cpan module into an ubuntu perl install? apt-cache search animation |grep -i ...
4
votes
3answers
4k views

Ubuntu Upgrade, Perl Version Broke ZImbra

Kind of in a bind here, since I heard about the bash bugs last night I decided on upgrading all off my server, not just the packages but the complete OS, it worked fine on all my servers, except my ...
4
votes
1answer
2k views

Perl doesn't include directory

I have a problem with perl5 with ubuntu. I've got a script, in which I include several directories. When starting the script, the shell returns Can't locate XML/Twig.pm in @INC (@INC contains: /...
3
votes
4answers
298 views

Bash create custom string

how could in bash a pattern like ROW1 n1 n2 n3 n4 up to 300 be done with some command in bash or also just perl...the delimiter would need to be \t as above
3
votes
3answers
4k views

How can I use perl 5.12 in 10.10?

How can I use perl 5.12 in Ubuntu? There is no distribution package on Ubuntu. I have to use feature 'unicode_strings'; in my perl code, and this is available from 5.12. I try to install perl on ...
3
votes
2answers
128 views

adding zero to specific location of file names

I have a directory consists of several files. Files name are as follows; 0102920.05o 0203920.05o 0304920.05o .... I need to add "0" for all files after the first 4 numbers like; 01020920.05o ...
3
votes
3answers
259 views

apt-file regex: escaping a dot

I want to find all packages which provide a shared object containing "ssl" in the file name. The apt-file manpage says: --regexp | -x Treat pattern as a (perl) regular expression. ...
3
votes
3answers
724 views

Error while installing Apache on 12.04 LTS

On Ubuntu 12.04 LTS server I need Apache 2.4.5 or greater. I do this: add-apt-repository ppa:ondrej/php5 apt-get update apt-get install apache2 But when I run the last command I get: Setting up ...
3
votes
1answer
472 views

How to enter a declared variable in the mail body, while sending mail using perl script?

I am sharing a perl script here, which is supposed to send a mail with the HDD/RAM status in the message body: Also, the HDD out will happen only if the %HDD use is above 50%. How can I include the ...
3
votes
2answers
2k views

Shell script to restart a process if it outputs a certain piece of text

I have a python program which, from time to time, crashes with a number of different exceptions usually due to network issues. The only way to get it to work is to restart it. How would I write a ...
3
votes
1answer
1k views

Why doesn't Perl use latest version by default?

When I try to use new perl features (like "say" instead of "print") the code fails until I put in the line "use 5.014;" and then everything runs. My installed version of perl is 5.14.2, and it looks ...
3
votes
1answer
409 views

yum whatprovides 'perl(Foo::Bar)' equivalent with apt or dpkg?

This is certainly related to this question, but I feel it doesn't overlap, so here we go. How can I get the functionality of the following command on Ubuntu (and/or Debian as bonus): yum whatprovides ...
3
votes
4answers
184 views

Find and replacement of the numerical part of a particular string with increased value using terminal command [duplicate]

The inputfile is, test00.dat test07.dat test03.dat aram22.dat test09.dat aram09.dat test13.dat I need the output file as test01.dat test08.dat test04.dat aram22.dat test10.dat aram09.dat test14....
3
votes
4answers
1k views

Replace string with multiline file content

I need to replace string SALT in a file with content of another file. Problem is that the input file has multilines. I tried something like this in my bash script: SALT=`cat salt.txt`; sed "s/SALT/$...
3
votes
1answer
328 views

Perl package not found with apt

When I try to do an upgrade or install something, apt(-get or aptitude) throw an error, saying that perl can't find XML/SAX/Debian.pm while trying to configure libxml-libxml-perl. Here is the full ...
3
votes
1answer
1k views

Perl may be unconfigured?

Hi I have error when I want to install,remove or configure my package this is the error debconf: Perl may be unconfigured (Can't locate Debconf/Log.pm in @INC (you may need to install the Debconf::...
3
votes
1answer
996 views

Get Quotes for stock prices in GnuCash using Finance::Quote

I have followed the instructions here, using the exact example, to have automatic stock price updates in GnuCash. When I click price editor -> Get Quotes it returns in a warning Unable to retrieve ...
3
votes
1answer
326 views

Why cant i find site_perl directory in Ubuntu?

I am compiling a program from source code. It requires path to my site_perl directory. When I run perl -V, i see that there is /usr/local/lib/site_perl at the end but i cant find the directory in the ...
2
votes
6answers
476 views

How can I extract text between a pair of the same character?

Input: blahŤfoobar1Ťblah Desired output: foobar1 I want to get the text between two "Ť" characters. Assume there will always be either 0 or 2 "Ť" characters, to make things easier. I tried the ...
2
votes
4answers
905 views

Parse lines with specific pattern out of file

I have a file that looks roughly like this : [25]:0.00843832,469:0.0109533):0.00657864,((((872:0.00120503,((980:0.0001 [29]:((962:0.000580339,930:0.000580339):0.00543993 ((758:0.000598847,726:0....
2
votes
4answers
3k views

Accessing MYSQL through terminal

I just installed LAMP in my computer through commandline.Now how can I access MYSQL prompt from commandline?I need to use MYSQL to create tables,views and then access them from my Perl script.
2
votes
5answers
5k views

How do I setup sendmail, postfix, or dovecot so that perl can send emails?

Direct Question: I want to enable Perl to send emails. What package(s) should I install to setup a simplistic email server: no need for incoming, only outgoing. I can forward through gmail's SMTP if ...
2
votes
5answers
8k views

How to batch rename files with “variables”? [duplicate]

I use xmbc to view my tv shows. Before I began using xmbc, I batch downloaded the first few seasons of "Bleach". What can I say, I'm an anime fan ;-). These are named: "bleachxx.mp4" where xx is the ...
2
votes
3answers
206 views

How can I divide an output with 2 delimiters?

By dividing with the "·" and " " characters, I would like to turn this: Hel·lo my name is E·ric To this: Hel·lo my name is E·ric Hel·lo my name is E· Hel·lo my name is Hel·lo my name Hel·lo my Hel·...
2
votes
2answers
92 views

Search for number sequence

say you have a file1.csv containing 5 million lines, each line has 8 random numbers separated by comma. And you have this sequence 7,152,13,11,42,5,7 How to output the lines in file1.csv containing 3 ...
2
votes
1answer
2k views

Using awk command in perl script [closed]

Can somebody suggest how to use piping of commands in a perl script? Specifically commands that involve calling awk? I'm trying to create a perl script that will read disk usage using df -H and ...
2
votes
2answers
9k views

How to correctly invoke awk in Perl to print out the 3rd last field in a line?

My script is: #!/usr/bin/perl -w my $line="1 2 3 4 5 6 7"; print $line; my $thirdlast=`print $line |awk '{print $(NF-3)}'`; print $thirdlast; The output is: 1 2 3 4 5 6 7 awk: 0602-542 There is ...
2
votes
1answer
9k views

How do I install a perl module in Ubuntu 12.04?

I need to use package List::Compare. I have downloaded Compare.pm which says use List::Compare::Base::_Auxiliary qw( _validate_2_seenhashes _chart_engine_regular ); What all do I need to ...
2
votes
1answer
4k views

change cpan install directory

I have tried to setup cpan on my ubuntu 12.04 using: sudo cpan and it created a folder perl5 in my $HOME folder. I would like to use a different directory such as $HOME/.perl5 or somewhere in /usr/...
2
votes
1answer
222 views

batch rename zip files based on contained file names

I've got a directory with 15000 zip files. I'd like to rename all files which, when unzipped, contain a file of the form YYYYMMDD_IPC.csv where YYYYMMDD happens to be a date but for the purposes of ...
2
votes
2answers
7k views

Can't locate LWP

After recent upgrade I can't launch only one of my apps it always gives me this error: Can't locate LWP/UserAgent/Cached.pm in @INC (you may need to install the LWP::UserAgent::Cached module) (@INC ...
2
votes
2answers
218 views

How to add space to Exec path in a Thumbnailer descrption?

I wish to use mplayer to generate thumbnails for nautilus, so I wrote a perl script as the thumbnailer named "gnome_thumbnailer_with_mplayer", and wrote a description in /usr/share/thumbnailers to ...
2
votes
2answers
19k views

How I can install RRD module in perl?

I'm very new to Ubuntu. I'm using Nagios Graph plugin. That plugin needs perl RRD module to be installed on my system. How I can install that? Thanks in advance.
2
votes
1answer
357 views

How to make a bootable pendrive in command-line?

How could a Bootable USB Pendrive can be created using the Ubuntu command-line. Can we use a script for the same? Can somebody help on this?
2
votes
2answers
2k views

Perl .pl file downloads instead of being executed

I'm trying to get OTRS 4.0 working on Ubuntu 14.04. I've followed all instructions to install from source. When I open the site (localhost/otrs/index.pl), an empty .pl-file is served for download. ...