Questions tagged [perl]
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.
501
questions
0
votes
0
answers
161
views
Perl, modifiers /m /s/ /ms
I have seen in Larry's Wall book programming Perl 3rd edition what do the modifiers
/s
/m
/ms
in some example with \n . Now I cannot find the exact page.
Specifically the example showed that only the ...
- 161
0
votes
2
answers
81
views
opendmarc: hostnamefqdn() shows only short name / helo command rejected fqdn
I have problem with opendmarc. This software uses perl function to send report mails. So in the source code I see that /etc/opendmarc_reports uses also function hostnamefqdn() to pass it to helo ...
- 1
0
votes
1
answer
546
views
500 Internal Server Error when run perl file and no access to command line
I'm a newbie with Perl. I've created a simple file test.pl with the code:
#!/usr/bin/perl
print 'test';
uploaded it to my shared hosting with Linux where PERL is enabled and changed my PERL file ...
- 269
0
votes
1
answer
277
views
Why does this regexp — which attempts to match characters between “@” characters — fail?
I need to extract the second field of selected lines in a GEDCOM file. These lines are all of the following format:
% grep @ /tmp/XYZ | tail -5
0 @X701@ OBJE
0 @X702@ OBJE
0 @X750@ OBJE
0 @X765@ OBJE
...
- 824
-1
votes
1
answer
157
views
Need to autoincrement directory names but by avoiding some letters in the name
My script creates a set of directories aa, ab, ac, and so on
This script autoincrement directory names but I want to avoid the letters: I, O, P, Q, R, W while creating directories.
The script which I ...
- 3
1
vote
1
answer
765
views
Unable to install DBD::mysql on Ubuntu 20.04
I am unable to get DBD::mysql installed on Ubuntu 20.04. I get the following error:
Warning: No success on command[/usr/bin/perl Makefile.PL LIB=/home/htm/Lib]
DVEEDEN/DBD-mysql-4.050.tar.gz
/usr/bin/...
- 21
0
votes
1
answer
201
views
Sending args from bash to perl
I eally need help
I would like to send args from bash file to perl file. I dont know why it is not working for me. My code foe testing is bellow
*******bash code *********
#!/usr/bin/env bash
chmod +...
0
votes
1
answer
52
views
a very simple Perl script needed
I have the following text file G.txt.
I need a perl command
perl -e ...
that would extract all negative entries ending with Kč, so that first line it will be
-107,60
and last will be -63,00
I have ...
0
votes
1
answer
337
views
Combining two txt files containing name and last name on command line
I have two text files. First file have 20 Names listed in seperate lines and 2nd file have 20 surnames listed in seperated lines. How I can combine those files. So final text file have both first name ...
- 354
1
vote
1
answer
936
views
How to make fork() fail?
For a script I'm writing, it's important to properly handle a failed fork() (see https://rachelbythebay.com/w/2014/08/19/fork/ for the Why).
But how, without bringing my system down with processes, ...
0
votes
0
answers
174
views
Reading email headers in Perl
I have an email account ([email protected]) and an alias ([email protected]) pointing to the account.
An email sent to [email protected] is delivered to [email protected] as expected.
Email headers in MS ...
- 21
0
votes
1
answer
81
views
Perl/Bash Solution to Test if a Folder Has Changed, Then Create Copy of It
I'd like to put together a script for a very rudimentary backup system that checks a directory recursively for any changes since the date another directory (the backup) was created and, if it finds ...
3
votes
0
answers
43
views
How to rename a perlbrew installed version
I installed Perl 5.32 with the name perl-5.32.0
$ perlbrew list
* perl-5.32.0
The installation was updated with perlbrew upgrade-perl and I now have 5.32.1
$ perl --version
This is perl 5, version ...
- 7,897
2
votes
1
answer
111
views
Shell special chars blowing up regexp(s) in all: sed, (g)awk, and perl [closed]
I would like to change the PS1 in my ~/.bashrc programmatically with any of the the most popular regexp tools { sed, awk or perl }. However, I have problems with special characters. Note that in the ...
- 21
0
votes
1
answer
156
views
Transpose vertically with a catch
I've been working through some issues preparing data for logstash ingestion. I have a decent chunk of the process worked out but I'm wondering if there's a better way to do this. Basically I need to ...
