Perl is a high-level, general-purpose, interpreted, dynamic programming language. It was originally developed by Larry Wall as a general-purpose Unix scripting language to make report processing easier, over a period with support from open source community, it has evolved and matured to be used for ...

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3
votes
4answers
6k views

Extracting column from comma separated text

I have a long comma-separated delimited file with 20K lines. Here's a sample: "","id","number1","number2","number3","number4","number5","number6","number7" ...
0
votes
1answer
95 views

How to get rows between lines?

I have a perl oneliner: echo -e 'sla\ndfjAAAAk\nsaljdfla\nsjdfBBBBsadf\njasdf' | perl -E 'my $_ = do { local $/; <> }; say join qq!\n!, m!\QAAAA\E\K(.*?)(?=\QBBBB\E)!gs' k saljdfla sjdf it ...
10
votes
4answers
2k views

Why is Perl installed by default with most Linux distributions?

Just curious. The title says it all: Why is Perl installed by default with most Linux distributions?
2
votes
3answers
2k views

Debian Wheezy and perl modules installed into /root not system

I have small problem cause everytime i issue cpan YAML or try to install any perl module it install's it inito /root/perl5 and with this any other user cannot use modules that I've installed as a ...
4
votes
6answers
476 views

What is the easiest way to check if column A and B values goes both ways with AWK? [closed]

What is the easiest way to check if column A and B values goes both ways? Output to check: Mike John John Mike Pamela Barbara Barbara Pamela Mike Paul Roger Paul Desired output Mike <-> ...
1
vote
2answers
909 views

What scripting language or platform to use for web page downloads and screen interaction? [duplicate]

Possible Duplicate: Does anybody here have experience in automating some tasks in web applications using curl? Here is what I need to do? Wondering what platform is most suited - easy to ...
2
votes
3answers
123 views

Need to parse a double entry table with two pairs

I have this two-entry table resulting from a program output: Variable1 : Value1 Variable2 : Value2 Variable3 : Value3 Variable4 : Value4 Variable5 : Value5 Variable6 : Value6 ...
6
votes
2answers
388 views

Trying to do arithmetic in Perl rename tool (Debian)

Let's suppose I have five mp3 files: 01-trackfoo.mp3 02-trackbar.mp3 03-trackbaz.mp3 04-trackabc.mp3 05-trackxyz.mp3 Now I give a quick listen to the files (just mplayer on console will do the ...
0
votes
2answers
217 views

Getting data from matching list

list.txt GETID_17049_knownids_1/2_Confidence_0.625_Length_2532 GETID_9248_knownids_6/10_Confidence_0.439_Length_2474 GETID_11084_knownids_3/3_Confidence_0.600_Length_1451 ...
1
vote
4answers
7k views

sed/awk/perl - delete spaces between two strings/words + solaris 10

please advice how to delete the spaces between "=" to the value/string ( after the "=" character) , should be implemented by awk or sed or perl command and command must to fit for solaris OS , ( ...
4
votes
2answers
179 views

Column mismatch and substituting

input.txt (tab-delimted) TTTTOTTT00000000008 RTTTT899 5.00E-28 TTTTOTTT00000000046 RTTTWRR 3.00E-31 TTTTOTTT00000000051 2.00E-11 TTTTOTTT00000000051 7.00E-12 TTTTOTTT00000000054 ...
2
votes
2answers
397 views

Get row data for non-matching column values

I want to read the file (1600 rows) and get rows only the columns have different values (sno1, sno2, sno3 & sno4-should be not be equal value) and it should be above 50%.The example of output ...
3
votes
2answers
442 views

Print row contain maximum and minimum value

I need to read the file (contains 16K rows)and print the entire row if any of columns and all columns contains max value (100) and all columns contain min value (0).The ouput example is given ...
0
votes
1answer
223 views

Bugzilla email_in.pl script will take 111 hours to complete - how can I change that?

I have an old Bug tracking system, with about 20k bugs. We have installed a new bugzilla system, and part of the initiation will be to import all the bugs from the old system to the new. I am able to ...
3
votes
2answers
2k views

Where are the command-line options to perl documented?

On StackExchange I came across a command that looked like this: perl -pe ... Curious what the -pe options meant, I did man perl. This is the synopsis of that man page: perl [ -sTtuUWX ] [ ...
2
votes
1answer
237 views

Why does this simple Perl client not work?

I am fairly new to IPC with sockets and expect this issue is a simple one to resolve. I'm trying to understand why I cannot get this example script from perldoc perlipc to run on my Ubuntu setup: ...
0
votes
1answer
139 views

How do I get bcvi installed and working (with Cygwin and Perl 5.8.8)?

I'm trying to install bcvi (under Cygwin), and there are apparently no directions that apply to this setup. The directions at http://sshmenu.sourceforge.net/articles/bcvi/#installation state that ...
0
votes
2answers
498 views

Perl-Minimum & Maximum value [closed]

input file Xm_ABL1 Geneious extracted region 1 168 . + . Name=Extracted region from gi|371443098|gb|JH556762.1|;Extracted interval="3512970000000 -> 3514640000000" Xm_ABL1 Geneious ...
1
vote
2answers
752 views

Perl piping some out of script and some to the screen

How do I pipe some output to screen and some other selected output, out of the Perl script?
2
votes
5answers
4k views

Perl script, do cd on terminal

In Script to change current directory (cd, pwd) it is shown how to run a bash script that changes terminal directory. But how do i run a perl script that runs a bash script that changes terminal ...
2
votes
1answer
221 views

Perl- Adding underscore and sorting rows

As I am biologist and new to perl, I would like to get help of perl expert cat input.txt ##gff-version 2 ##source-version geneious 5.6.3 gi371443188gbJH5566721_extraction_reversed Geneious CDS ...
6
votes
2answers
988 views

Installing CPAN dists not in the Arch repos

There's a lot of CPAN distributions in the Arch repositories, but not all of them. How should I handle a situation when I need a dist that is not already in the repos? Should I use the cpan program ...
2
votes
1answer
178 views

perl-get input, check conditions

cat input1.txt ##gff-version 2 ##source-version geneious 5.6.4 Xm_ABL1 Geneious CDS 1 168 . + . Name=Xm_ABL1;created by=User;modified ...
0
votes
1answer
756 views

Extract value from different column and replace in another column

I am a biologist, I need one more help in text file editing. I would like to get the help of computer experts ##fsdfsd ##sdd-ver gen 5.5.7 Xm Gen CDS 1 148 . + . ...
2
votes
1answer
249 views

text processing-perl

I am a biologist. I would like help of computer experts to help in text file editing. Here is what the input file looks like: ##dsfsd2 ##sdf-sdf sasg 5.6.3 gi34_ex Gen CDS 161 317 . ...
3
votes
2answers
520 views

Running jobs in parallel on Ubuntu - I/O contention differences between Perl and Java

Apologies if this is off topic - it concerns the relative efficiencies of running I/O-heavy Perl/Java scripts in parallel on a Ubuntu system. I have written two simple versions of a file copy script ...
6
votes
2answers
9k views

Compare two file columns

I have long text files with space-delimited fields: cat file1.txt Id leng sal mon 25671 34343 56565 5565 44888 56565 45554 6868 23343 23423 26226 6224 77765 88688 87464 6848 66776 23343 63463 ...
3
votes
2answers
647 views

Parsing a text-file table and aggregating information

I have long text file with the following columns, space-delimited: Id Pos Ref Var Cn SF:R1 SR He Ho NC cm|371443199 22 G A R Pass:8 0 1 0 0 ...
1
vote
1answer
590 views

How to start a perl webserver with systemd?

I copied this this file (vokabel_daemon.service) [Unit] Description=Start vokabeltrainer daemon After=network.target [Service] ExecStart=/home/mm/lib/vokabeltrainer/box_vokabeltrainer.pl daemon ...
-2
votes
3answers
2k views

how to check for disk in use on rhel

How to check if a disk is in use? If in use, How to check free, used space before I can start using it? I'm trying this in Perl and Any help is appreciated.
0
votes
1answer
150 views

knock on Scientific Linux 6.1? (perl script for knocking?)

I have an OpenWrt router where I installed knockd: knockd.conf [options] logfile = /var/log/knockd.log [openSSH] sequence = 7000,8000,9000 seq_timeout = 5 command = ...
2
votes
2answers
3k views

How to do a regex search in a UTF-16LE file while in a UTF-8 locale?

EDIT: Due to a comment Warren Young made, it made me realize that I was not clear on one quite relevant point. My search string is already in UTF-16LE order (not in Unicode Codepoint order, which is ...
2
votes
2answers
406 views

find command for the newest 500 files in a directory tree and also be POSIX compliant

I am looking for a single line shell script or unix command to find the newest 500 files in a directory. Major constraints are it should be POSIX complaint and the directory can have tons of files.
1
vote
1answer
2k views

Connect to a remote mysql server with bash php or perl

What is the best and lowest resource way to connect to a remote mysql server (server1.example.com) and execute queries like INSERT into SERVICES (user, id) ($user, $id) from server2.example.com? ...
2
votes
3answers
759 views

How can I turn ugly output into pretty, useful information?

How can I turn this ugly output into pretty, useful data? The output: /* ---------- TA#box#AbC_p ---------- */ insert_job: TA#box#AbC_p job_type: a #owner: bob permission: gx date_conditions: 1 ...
-6
votes
1answer
447 views

Linux: create list of text with multiple operators [closed]

I want to make a list like this: 7785237_770x770_de3b540dc13ed50023d17854513b40aa07e50a6a 732308_770x770_ec5c344c0114011a5306b31142ff9b001813f6d6 ...
0
votes
2answers
219 views

Difference in regular expression handling between Perl, Kikki, and Kodos

#!/usr/bin/perl $mystring = "[2004/04/13] The date of this article."; if($mystring =~ m/(\d+)/) { print "The first number is $1."; } Perl returns 2004, but Kiki and Kodos return /04/. Why ...
2
votes
1answer
116 views

Solaris “clean” group files (or for that matter any text file)

I am looking to find a way to script a cleaning operation on the /etc/group file on a large number of servers. Looking for users in a particular group more than once. i.e. somegroup::100000:userA, ...
0
votes
1answer
585 views

FTP files from one remote server to another

I am trying to find out how I can transfer files from one directory/server to another directory/server? What I need to consider is that I should transfer files that are created TODAY only. i.e. the ...
3
votes
1answer
250 views

Is it a good idea to supplement shell script with perl purely for use of regex?

I'm looking for a simple way to utilize regex in a UNIX shell script where not every system will have perl extensions built into grep. What is really helpful about perl regex here is back/forward ...
0
votes
1answer
832 views

install RPM packages using perl

I'm trying to install RPM package using 'yum' through perl. But, the package is prompting to enter 'Y/N' during the install. How can i do a silent install?
12
votes
2answers
9k views

How to know reason of a process going to sleep state and wake it up?

When I do 'top' , I see my perl script process in 'S' state. Is there a way to know, what is making this perl process go in sleep state and ways to wake it up? Any way to debug to give more insights ...
0
votes
2answers
327 views

Linux - get shared memory values from Perl script

I'm trying to get shared memory information from a linux box. I'm looking for shmmax, shmmni, shmall, msgmax, msgmni, semmsl, semmns etc. How to get all those values from a Perl script. any help is ...
7
votes
4answers
3k views

Find files with same name but different content?

I want to generate a list of files that have: Same name Different content in a directory (including all children directories and content). How to do? Bash, perl, anything is fine. So, two ...
1
vote
3answers
696 views

How to move files into newly created directory on condition in shell/perl

It was a mess of music files and directory. It is needed to perform the below operation over multiple directories at once: If the directory contains ".jpg" files, then create a new directory ...
9
votes
7answers
7k views

How to insert the content of a file into another file before a pattern (marker)?

File1 contents: line1-file1 "1" line2-file1 "2" line3-file1 "3" line4-file1 "4" File2 contents: line1-file2 "25" line2-file2 "24" Pointer-file2 "23" ...
0
votes
1answer
203 views

How to get the filename if particular regexp is present in the file in Perl

In a directory containing many files, if a particular regexp (or format) was found in file, I'd like to get that filename Example: If the word "rama" is found in file called ramayana, print the ...
4
votes
1answer
2k views

Escaping of meta characters in basic/extended posix regex strings in grep

Is it possible to escape all meta characters of a string inside a variable before passing it to grep? I know similar question has been asked before on SE (here) and also a good explanation here, but I ...
1
vote
1answer
3k views

Apache cannot fork: cannot allocate memory

I am running apache on Fedora with mod_perl. The server forks a process to send an email frequently - and the fork exits. Suddenly, I got: Cannot fork: Cannot allocate memory. There was plenty of ...
4
votes
2answers
1k views

Parsing XML from a shell script

I have a datafile like this: <Key name="com.ahsay.afc.cpf.UserGroup" content="" allowMultiple="Y"> <Value name="rsv-id" inheritParentAttribute="Y" type="string" data="1328200856753" ...