Questions tagged [perl]
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/
318
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Ubuntu 22.04: perl ExtUtils::Embed is broken for ldopts
Running perl -MExtUtils::Embed -e ldopts results in unusable output:
-Wl,-E -fstack-protector-strong -L/usr/local/lib -L/usr/lib/x86_64-linux-gnu/perl/5.34/CORE -lperl -ldl -lm -lpthread -lc -lcrypt
...
- 101
0
votes
1
answer
35
views
Perl: replace literal expression and literal variable names
When I use this expression:
echo '...${var}#other.([]);,=${var}#other${var}...' | perl -pe 's/\Q.([]);,=${var}\E/.([]);,=ok/'
As expected, the variable ${var} is expanded to "" (empty value)...
- 147
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votes
0
answers
19
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I can not open any programs after install perl-Sys-Syslog package
i used ubuntu 18.04 gui (maybe) i connected this server use ssh and installed perl-Sys-Syslog package to use yum yum install perl-Sys-syslog
install was done but something was fail and then i can not ...
- 1
0
votes
2
answers
212
views
perl - get non-zero exit code if at least one of the listed files does not exist
As for the cat command, which returns an exit code other than 0 if at least one file in the list does not exist, but continuing its execution, I would also like the same behavior for the "perl&...
- 147
0
votes
0
answers
168
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Perl module missing. File :: copy. Ubuntu 22.04 lts
I recently installed unbuntu server on my pc to run a basic web server from my home for personal use. The install went perfectly. I uploaded my cgi files for my site and noticed they were not ...
- 1
1
vote
2
answers
220
views
How to delete emojis from Youtube filenames?
Im trying to remove emoticons from this Youtube filename:
وسائل الاتصال الحديثة 📺 & 💻 😃 -eYrBcHOx2Jf.mp4
Im using perl -p -e 's/[^[:ascii:]]//g' and tr -dc '[:print:]' but got this;
& -...
- 365
1
vote
0
answers
42
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perl script wont run unless I use perl prefix [duplicate]
I have a weird problem trying to run a simple perl script on ubuntu 22.04.
test.pl content:
#!/usr/bin/perl
print "Hello\n";
output of which perl command:
/usr/bin/perl
I used to run ...
- 111
1
vote
1
answer
177
views
ubuntu cannot find /usr/bin/ld -lperl
/usr/bin/ld: cannot find -lperl
collect2: error: ld returned 1 exit status.
command used
-L/usr/lib/x86_64-linux-gnu/per;/5.30/Core -lperl -ldl -lm -lpthread -lc -lcrypt libtool
On the above path I ...
- 11
0
votes
1
answer
52
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Error when installing mariadb on Chromebook
I'm trying install wordpress locally on my chromebook following these instructions.
I successfully ran:
`
sudo apt update
sudo apt upgrade
sudo apt install nano
`
But then get an error when I try to ...
-1
votes
1
answer
365
views
Why Ubuntu (20.04) doesn't have Perl preinstalled?
https://unix.stackexchange.com/questions/48018/why-is-perl-installed-by-default-with-most-linux-distributions
https://stackoverflow.com/questions/1164133/are-there-unix-platforms-where-perl-is-not-...
0
votes
1
answer
327
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perl modules missing after upgrading to 22.04
Yesterday I upgraded from 20.04 to 22.04
the upgrade went fairly smoothly.
However, after the upgrade, all the perl modules I had installed were no longer installed.
Is this because Perl was re-...
2
votes
3
answers
552
views
Renaming multiple files by removing a single number (1 & 2) in each file [duplicate]
I have approx 200 files named in the format:
paired_dat_11_R1.fq
paired_dat_12_R2.fq
paired_dat_121_R1.fq
paired_dat_122_R2.fq
paired_dat_851_R1.fq
paired_dat_852_R2.fq
I just would like to rename ...
- 23
0
votes
1
answer
70
views
how to show perl printf with decimal as a variable
#!/usr/bin/env bash
n=3
awk "BEGIN {printf \"%.\"$n\"f\", (2*2.22222222)}"
result: 4.444
but:
perl -e "printf \"%.3f\", (2*2.22222222)"
how ...
- 41
1
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0
answers
159
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perl can't see path problem ubuntu 20.04.4 anaconda
Hi Im trying to run pfam_scan.pl (bioinformatics)
Im using conda but theres is perl from ubuntu system... Its conflicts with another? Or script can't see modules?
$ pfam_scan.pl
Can't locate Moose.pm ...
- 13
0
votes
0
answers
193
views
unable to locate librrd-simple-perl
I am unable to install librrd-simple-perl. System says it is "unable to locate package...". I am trying to install it on a fresh Ubuntu Server LTS 22.04.
Am I missing a repository?
- 31
0
votes
0
answers
19
views
How to find mentions of a string in all directory files? [duplicate]
I will describe my task:
I have a lot of directories with a lot of perl-files. I need to find all files that mention the string "license.key". What ways can this be implemented?
0
votes
0
answers
428
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Problem installing Perl module Sys::Info::Driver::Linux
I am running Linux on Windows (Ubuntu) to install a bioinformatics software (MEME Suite - Installation Guide). Please bear in mind I do not have much experience using Linux.
I am following the ...
3
votes
1
answer
3k
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Trying to update from 16.04LTS to 18.04LTS but unmet perl dependencies or conflicts when updating packages
I've done: sudo apt update
But when I do sudo apt upgrade, I get:
The following packages have unmet dependencies:
perl-modules-5.22 : Conflicts: perl-modules
Conflicts: perl-...
- 31
1
vote
0
answers
274
views
How to use cpan command to install downloaded perl module (.tar.gz file)
I want to install Sys::RunAlone. I'm not able to install cpanm due to other independent reason, with which I was able to give the downloaded Sys::RunAlone compressed file directly and it installed. In ...
- 333
0
votes
1
answer
69
views
Can Raku and Perl 5 Run on Same Ubuntu With Switching
I am using a desktop with Ubuntu 20.04. I have Perl 5 installed. I will be installing Raku. Before I install Raku, I want to make sure that I can switch between them, when running a Perl script.
Is ...
- 1
4
votes
2
answers
1k
views
Shutter is complaining about that can't locate Carp/Always.pm in @INC
I made a full upgrade from Ubuntu v18 to Ubuntu v20.
Shutter was not upgraded - it was removed.
I was trying to install from CRAN or from source.
Both complain about old Perl libraries.
When I am ...
- 521
1
vote
2
answers
386
views
reinstall spamassassin (broken perl)
spamassassin was broken on my Ubuntu 20.10 and I can't reinstall it.
I have done
dpkg --purge spamassassin sa-compile spamc
deluser --remove-all-files debian-spamd
apt update
apt upgrade
apt install ...
- 506
0
votes
0
answers
83
views
how we can append the data in perl using bash?
i have multiple perl scripts ,currently its working from the shell, but my requirement is like automate this scripts from the bash.
perl smtp-check.pl < unmatched-00250 > good_smtp_251 2> ...
0
votes
1
answer
182
views
variable substitution
I found this on shell script, in variable substitution option using cap symbols
can anyone explain the logic of this nf=${f:gs^__^/^}
for f in notes__* books__*; do
nf=${f:gs^__^/^}
perl -p -...
- 25
0
votes
0
answers
14
views
Open pl command [duplicate]
This is probably pretty basic but I have not been able to solve it. I am trying to execute IDrive for Linux, and following the instructions I need to run account_setting.pl. I open the terminal ...
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1
vote
2
answers
350
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Problem with Perl installation on Ubuntu 20.04
I am an inexperienced user. I have two different bioinformatics applications using different Perl libraries. I get the following error when trying to execute one of them:
/usr/bin/perl: symbol lookup ...
- 13
-1
votes
1
answer
47
views
How to handle format in perl?
I want to write the number in two decimal using Perl script. Here is my code.
#!/usr/bin/perl -w
print "Preparing input files\n";
$incr=0.10;
&prepare_input();
exit(0);
sub ...
- 23
0
votes
1
answer
139
views
for loop issues, ls not working right
I have a code that has to be run through Ubuntu. When my code reaches filelist, instead of giving all of the subfolders within the filelist, it gives the same list as from the subjectlist... why is ...
0
votes
1
answer
668
views
nginx hangs if "reload" 2 times
If you execute "service nginx reload" 2 times (this also works with any commands that execute "reload", for example systemctl reload nginx.service) - nginx hangs and stops ...
1
vote
2
answers
60
views
Append multiple digits to the end of eatch lines
i need to cat temperature values in /sys/class/hwmon/hwmon[0-9]/temp[0-9]_input and append them to the corresponds names in given file.
help !
- 365
0
votes
2
answers
510
views
WSL Ubuntu why does cpanm install Perl5 modules in the wrong spot?
I have Ubuntu installed under Windows Subsystem for Linux 2 (WSL2). There are Perl5 modules installed under /usr/share/perl/5.30.0 and I can access these with a plain use statement. But when I install ...
- 293
0
votes
2
answers
313
views
I can launch a Perl script with cron, but can I make it open up a window?
I have an Perl script that runs all night, through a terminal window (Win10 putty.exe) on my Ubuntu server. As with many home networks, I occasionally lose my internet connection, which kills my ...
- 171
2
votes
2
answers
3k
views
replace text with part of text using regex with bash perl
For example I have this output:
string1 anynameveryveryverylong string2
string1 othernameveryveryverylong string2
I want truncate the name to the first ten characters:
string1 anynamever string2
...
- 147
0
votes
1
answer
200
views
Can I stop SSH Terminal window, into Ubuntu command line, from closing on error in Perl script?
My apologies if I am in the wrong Stack section, if I am please just let me know and I will delete this post.
I am running Perl scripts on my Ubuntu server, 18.04. I run them from my Mac and PC. One ...
- 171
3
votes
3
answers
208
views
bash perl \z doesn't work
I have this text file or sdout:
text1
text2
text1
text2
text1
text2
I have this code:
perl -pe "s/text2\n\z/text3/s" text.txt #Note the modifier "/s"
I with \z expect him to ...
- 147
-2
votes
2
answers
915
views
Replace only last occurrence of a string using perl command
I have a stdout or a file does not matter:
mela
pera
banana
caffè
mela
pera
banana
caffè
mela
pera
banana
caffè
I want remove only last occurrence of "mela" using perl:
mela
pera
banana
...
- 147
0
votes
1
answer
740
views
Install perl 5.10.1 on Ubuntu 18.04
I am trying to install an old version of perl (5.10.1) since it is a dependency for software I want to use (and newer versions do not work). I downloaded the source from https://www.cpan.org/src/...
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1
answer
2k
views
Ubuntu 20.04,1 failing to install perl modules
for example File::Slurp
Reading '/root/.cpan/Metadata'
Database was generated on Sun, 06 Dec 2020 19:29:03 GMT
Running install for module 'File::Slurp'
Checksum for /root/.cpan/sources/authors/id/C/...
0
votes
0
answers
154
views
Make issue in Ubuntu 20.04
I have a "make file" to install some files, which will highlight syntax in gvim.
It was downloaded from Github, for reference.
When I attempt to install it was showing some error:
"let ...
0
votes
3
answers
126
views
Re: How can I escape meta-characters when I interpolate a variable in Perl's match operator?
The link
How can I escape meta-characters when I interpolate a variable in Perl's match operator?
didn't help me.
I have tried with Python:
import os
line='ID_SN=02 MS=DC:A6:32:7E:74:08 S=* ...
- 147
0
votes
1
answer
818
views
perl command: Append a line of text only at the first occurrence
I have this input file:
text1
match
text2
match
text3
I have the command that inserts a line before the match:
perl -lpe 'print "prepend_me" if /^match$/ && ++$i == 1' text.txt
And ...
- 147
1
vote
2
answers
519
views
perl command: Prepend a line of text only at the first occurrence
I have this input file:
text1
match
text2
match
text3
And I have this command:
perl -lpe 'print "prepend_me" if /^match$/' text.txt
And its output is:
text1
prepend_me
match
text2
...
- 147
1
vote
1
answer
1k
views
Perl Module Location Issue
I'm on Ubuntu 20.04 LTS.
I ran the following commands to try to connect to my PostgreSQL database:
sudo -i -u postgres
postgres@{username}:~$ psql
This raised the following error:
Can't locate ...
- 111
0
votes
1
answer
121
views
bash perl "and" operator
with a output:
apple text1
peach text2
banana text3
melon text4
For delete rows that begin with "apple" or "banana" i put:
perl -pe 's/^apple.*\n|^banana.*\n//g'
And output is ...
- 147
4
votes
2
answers
915
views
bash --> perl command: print only the replaced text
I have the file "test.txt" that contains:
Val1 = '59'
Val2 = '76'
Val3 = '42'
Val4 = '53'
I with this command:
perl -pe "s/^Val2 = '(.*)'/\1/" test.txt
I Want:
76
But I obtain:
...
- 147
0
votes
0
answers
169
views
Where can I find the system log files on my ubuntu 20.04.01 LTS system
My system is a ubuntu 20.04.1 LTS system
I am working with some perl scripts that use Sys::Syslog to write to the system log.
My questions are :
Where are the log files that contain these written ...
2
votes
1
answer
6k
views
perl install DBD::mysql failed on ubuntu 20.04
I have installed the latest mysql database on my ubuntu 20.04 laptop.
Next I tried to install all the perl modules I need to write Perl scripts to access my mysql database.
I started a "sudo -i&...
3
votes
0
answers
2k
views
How to install slurm-seff in Ubuntu [duplicate]
I am trying to install Slurm-seff Perl package into Ubuntu 19.10.
It has .rpm package to install https://pkgs.org/download/slurm-seff ; but I am unable to install alien to install the .rpm package.
...
- 232
0
votes
2
answers
607
views
What Ubuntu 20.04 package gives the Perl module Locale::Language?
What Ubuntu 20.04 package gives the Perl module Locale::Language? I've looked on https://packages.ubuntu.com/ but I can't find anything. Web search isn't turning up anything. Not sure I'm searching ...
- 263
3
votes
2
answers
698
views
Deleted /usr/share/perl/5.26 because I had /usr/share/perl/5.26.1 folder
Being new to perl and its versions, I thought it worked like R but OBVIOUSLY not. I had folder /usr/share/perl/5.26.1 folder and /usr/share/perl/5.26 folder both with same files so I deleted /usr/...
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