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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1answer
205 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
232 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
130 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
474 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
691 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
207 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
891 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
177 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
718 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
244 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
500 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 ...
5
votes
2answers
8k 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
590 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 ...
-2
votes
3answers
1k 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
147 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
2k 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
377 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
688 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 ...
-5
votes
1answer
398 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
217 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
110 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
524 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
244 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
808 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?
11
votes
2answers
7k 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
313 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
633 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 ...
5
votes
6answers
5k 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
193 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" ...
0
votes
3answers
459 views

Prevent init daemon echoing on TTY

Below is an init script which starts/stops a daemon. The daemon is unfortunately printing the parsed packet data (from /home/nuthan/program/server), a socket server written in perl, listening to a ...
0
votes
1answer
1k views

Manually assign a value when inet_ntoa does return an ip address

Code: foreach $hostname (@hostnameUniqueSorted){ $ipaddr = inet_ntoa((gethostbyname($hostname))[4]); if(chomp($ipaddr) =~ '^$') $ipaddr == "ip not avail"; <-- doesn't work } If the ...
2
votes
4answers
2k views

Extract IP address from a string

The Linux host command returns: hostA.domain.com has address xx.xxx.xxx.xx How do I get just the IP address and put it in the $ipaddr variable? open(FILE, "hostlist.txt") or die("Unable to open ...
2
votes
2answers
938 views

how to apply this patch

There is a patch fix for perl module net::ssh2 it fixes a seg fault error that happens on some machines. It's located here: https://rt.cpan.org/Public/Bug/Display.html?id=36614 I downloaded the ...
1
vote
0answers
97 views

Perl Script to Display Pork Offline Message

I use pork 0.99.8.1 on openSuse 11.4 for my AIM account when I don't want to use irssi + bitlbee. The only problem I have encountered so far is that offline messages are not displayed. I just get a ...
8
votes
6answers
2k views

Delete lines beginning with #

How do I delete lines beginning with a #, given that there can be whitespace on the left and right of the #? # Master socket provides access to userdb information. It's typically
5
votes
3answers
2k views

Regex & Sed/Perl: Match word that ISN'T preceded by another word

I'd like to use sed or perl to replace all occurrences of a word that doesn't have a certain word in front of it. For example, I have a text file that contains a plot of a movie and I want to replace ...
2
votes
1answer
589 views

How to insert a first column to many files + how to convert unix time to normal time

There are many-many files in a directory that has e.x.: the following content: INPUT: root 1324711901 sshd 1272725792 And I'm searching for a solution how to convert the content of the ...
0
votes
2answers
566 views

Need to install MySQL Client libaries but RPM not installing them

I'm trying install the MySQL Client libraries for the Perl Mod of the same name but when I run sudo rpm --install -v --allfiles MySQL-client-5.5.16-1.linux2.6.i386.rpm and querying the rpm ...
2
votes
2answers
339 views

perl regex replacing globally when global not selected

I'm using Ubuntu 11.04 and wrote a small script that searches within text files for certain "tokens" and replaces with some a prewritten snippet from a template file of the same name. The text files ...
3
votes
3answers
210 views

What does . match?

In working with regular expressions, I have been told that a dot character . will match everything. Except for newlines \n. Are there any other exceptions? What about the NUL character \0, or the ...
4
votes
2answers
2k views

How do you determine if AIX 5.3 has perl installed?

Simply put, how do you determine if AIX 5.3 has perl installed as non-root?
5
votes
1answer
1k views

Renaming files to have lower case extensions with 'rename'

I'm trying to currently rename a large set of files and have been using quite kludgy methods to do so, such as: rename 's:(.*)\.MOV:$1.mov:g' *.MOV rename 's:(.*)\.JPG:$1.jpg:g' *.JPG What I'd ...
4
votes
4answers
1k views

How can I remove a specific string from a file only if there are other lines in the file?

How can I remove a specific string from a file ONLY if there are other lines in the file? For example, don't touch this file: cat file.txt ASDF but remove "ASDF" from this file: cat file.txt ASDF ...