Questions tagged [perl]
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 graphics programming, system administration, network programming, finance, bioinformatics, and other engineering applications.
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Renaming files in Linux using perl scripting
I have a set of files with prefix, say "pre_", on a Linux machine and I just want to rename all of these files by removing that. Here is the perl code I wrote it doesn't throw any errors, ...
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View perl module install error AFTER installed
When installing Perl modules (prerequisites for another program), some module showed me an incompatibility warning and said something about needing to downgrade a package. I thought I would get back ...
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Error installing perl BerkeleyDB module
I'm trying to install a program which has various perl dependencies. One of the perl dependencies (BerkeleyDB) fails during install. I know very little about perl. Is there a way for me (as a user) ...
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Is PERL5LIB setting needed?
I am copying the following systemd service file from an old server to a new one. I'm new to perl, and trying to understand what else needs to move with the service file (aside from the /usr/local/...
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Pipe null terminated file paths twice to same output, but second time sorted by basename
So, let's say I have a script that uses find to print paths with null-terminated filenames.
I also want to print another version of the output where each path is sorted by its basename. I want to ...
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Remove hostnames from URL with sed/awk
I got lists of urls with different domains and I want the hostname removed with sed, awk or something similar and only keep the path. There are no urls with port or username@password in it.
input:
...
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How to replace the contents of out.txt with in.txt in a third file?
I have three files, main.txt, out.txt and in.txt. I want to replace every occurrence of the contents of out.txt in main.txt with the contents of in.txt.
Both out.txt and in.txt may contain multiple ...
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How to deal with CRLF, CR line endings
I have a Perl script that parses data sent to me from a bunch of school districts. I'm adding a new school and have run into a problem I've never faced before. When I do $line = <INPUT>, it ...
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Processing large blocklists with GNU Parallel
This is an ongoing project that has undergone a major update to speed up list processing. Here is the homepage for anyone interested!
It processes lists defined in lists.json by transforming the list ...
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How to find the text between the nth occurence of a character and occurence n+1 with perl-rename?
perl-rename 1.14-1
Arch Linux: linux 6.2.12.arch1-1
I have a directory/folder with several subdirectories, all are named by one of the following patterns
Status quo of existing patterns
something-...
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How can I pass variables from a Perl script to a Bash script?
I got the duty to make a fix to an ancient Perl script our company uses, I haven't even looked at Perl in about 20 years. So I want to pick up a couple of the variables, and dump them to the ...
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Update package perl-*
I have a linux machine Oracle Linux Server 8.7 with kernel 5.4.17-2136.317.5.3.el8uek.x86_64.
Using the yum check-update command, I noticed that there are a number of perl-packages that I can't update....
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Change file name based on contents
I'm trying to rename a set of files based on what is in the file itself. I have likely more than a thousand files to rename by the time I'm done. I have code that will get me the first part of the ...
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ubuntu server 22.04.2 LTS not writing to perl based txt files?
I just installed Ubuntu server to create a home webserver for personal use. I added Virtualmin and my pages and cgi all come up as expected.
The problem I noticed is when I attempt to open, write to ...
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what does syntax .= means in perl
I came across a Perl script which uses following .= syntax
$key .= $descriptions[$i];
what does .= means here
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