Commands using perl | commandlinefu.com

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Functions

Terminal - Commands using perl - 345 results

perl -MYAML -MJSON -0777 -wnl -e 'print YAML::Dump(decode_json($_))' package.json

2013-09-23 02:37:32

User: ishiduca

Functions: perl

Up
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Convert JSON to YAML

Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

echo -n 023135 | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | nc -4u -q1 -p5001 192.168.0.100 2000

2013-09-18 14:31:47

User: sucotronic

Functions: echo perl

Tags: netcat hex udp raw bytes

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send raw data (hex written)using UDP to an IP and port

Use it to send raw data to a networked device. Used to interact with relay controller board whose documentation is lost, so use wireshark to sniff the sent data and replayed using the command.

Comments (132) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

perl -p -e 's/\$(\w+)/$ENV{$1}/g;' <files...>

2013-09-11 20:57:07

User: Kurposkano

Functions: perl

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Replace all environment variable references in files with environemnt variable values

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alarm() { perl -e 'alarm shift; exec @ARGV' "$@"; }; alarm 20 foo arg1

2013-08-26 19:40:55

User: fnds

Functions: exec perl

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Execute a command with a timeout

Found it at http://www.cyberciti.biz/faq/shell-scripting-run-command-under-alarmclock/

perl -Mojo -E 'say g("http://www.census.gov/popclock/data/population/world")->json->{'world'}{'population'};'

2013-08-25 02:49:36

User: salparadise

Functions: perl

Tags: perl mojolicious

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Fetch the current human population of Earth

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logger -tdnsupdate $(curl -s 'https://dynamicdns.park-your-domain.com/update?host=@&domain=xxx&password=xxx'|tee -a /root/dnsupdate|perl -pe'/Count>(\d+)<\/Err/;$_=$1eq"0"?"Update Sucessful":"Update failed"'&&date>>/root/dnsupdate)

2013-08-11 16:27:39

User: MagisterQuis

Functions: logger perl tee

Tags: perl curl logger namecheap dyndns park-your-domain.com

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Update a namecheap @ A record to point to your current internet-facing IP address

Sets the @ A record for your domain hosted by namecheap to your current internet-facing IP address, logs success or failure with syslog, and logs the data returned to /root/dnsupdate.

Change the XXX's as appropriate.

More info at: http://www.namecheap.com/support/knowledgebase/article.aspx/29/

convert_path2uri () { echo -n 'file://'; echo -n "$1" | perl -pe 's/([^a-zA-Z0-9_\/.])/sprintf("%%%.2x", ord($1))/eg' ;} #convert2uri '/tmp/a b' ### convert file path to URI

2013-07-01 08:54:45

User: totti

Functions: echo file perl

Tags: encoding PATH url

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Encode file path to URL

Really helpfull when play with files having spaces an other bad name. Easy to store and access names and path in just a field while saving it in a file.

This format (URL) is directly supported by nautilus and firefox (and other browsers)

perl -lne 'print unless $seen{$_}++'

2013-07-01 03:47:48

User: kotokz

Functions: perl

Up
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remove duplicate with change order

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perl -le '$l=80;$l2="!" x $l;substr+($l2^=$l2),$l/2,1,"\xFF";{local $_=$l2;y/\0\xFF/ ^/;print;($lf,$rt)=map{substr $l2 x 2,$_%$l,$l;}1,-1;$l2=$lf^$rt;select undef,undef,undef,.1;redo}'

2013-06-21 06:00:24

User: l3v3l

Functions: perl

Tags: perl sierpinski cellular automata 2D

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Draw a Sierpinski triangle

xmas lights for your terminal - switching the $l value to something like 1200 and zooming out on your terminal gives a great view ...

perl -e 'printf "%o\n", (stat shift)[2]&07777' file

2013-06-15 19:26:23

User: smallduck

Functions: perl stat

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ls output with mode in octal

one of the solutions from this stackexchange: http://unix.stackexchange.com/questions/71585/convert-ls-l-output-format-to-chmod-format

nohup tail /var/log/murmur.log | perl -ne '/^<.>[0-9:. -]{24}(\d+ => )?(.*)/; $pid=`pgrep -u murmur murmurd | head`; chomp $pid; `logger -p info -t "murmurd[$pid]" \\"$2\\"`;' &

2013-05-25 01:12:52

User: MagisterQuis

Functions: info nohup perl tail

Tags: murmur mumble murmurd OpenBSD

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Send murmurd log lines to syslog

Sends log lines from murmur's (the mumble server's) logfile to syslog.

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tail -F some.log | perl -ne 'print time(), "\n";' | uniq -c

2013-05-11 04:51:22

User: grana

Functions: perl tail uniq

Tags: tail wc

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Lines per second in a log file

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ps -e -m -o user,pid,args,%mem,rss | grep Chrome | perl -ne 'print "$1\n" if / (\d+)$/' | ( x=0;while read line; do (( x += $line )); done; echo $((x/1024)) );

2013-05-07 22:50:44

User: unixmonkey39631

Functions: echo grep perl ps read

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Chrome sucks

How much memory is chrome sucking?

pwd|grep -o '/'|perl -ne '$x.="./.";print`readlink -f $x`'|xargs -tn1 chmod 755

2013-03-14 12:03:44

User: luke_skywalker

Functions: chmod grep perl pwd xargs

Tags: perl xargs grep chmod

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Ensure path permissions from '.' prior to root

`pwd` returns the current path

`grep -o` prints each slash on new line

perl generates the paths sequence: './.', './../.', ...

`readlink` canonicalizes paths (it makes the things more transparent)

`xargs -tn1` applies chmod for each of them. Each command applied is getting printed to STDERR.

for i in `gpg --list-sigs | perl -ne 'if(/User ID not found/){s/^.+([a-fA-F0-9]{8}).*/\1/; print}' | sort | uniq`; do gpg --keyserver-options no-auto-key-retrieve --recv-keys $i; done

2013-03-10 09:15:15

User: hank

Functions: gpg perl sort

Tags: bash GPG sed fetch

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Fetch all GPG keys that are currently missing in your keyring

The original command doesn't work for me - does something weird with sed (-r) and xargs (-i) with underscores all over...

This one works in OSX Lion. I haven't tested it anywhere else, but if you have bash, gpg and perl, it should work.

curl http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html 2>/dev/null | grep '^<h3' | grep -v '^\d' | perl -pe 's/^.*(?<=(\d\d\d)) (.*)<\/h3>$/$1 : $2/' | grep -v h3

2013-03-06 01:49:08

User: klg

Functions: grep perl

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Get a list of HTTP status codes

When you need a quick ref guide while troubleshooting Apache|NGINX error|access logs.

wget -q -O - http://listen.di.fm/public2 | sed 's/},{/\n/g' | perl -n -e '/"key":"([^"]*)".*"playlist":"([^"]*)"/; print "$1\n"; system("wget -q -O - $2 | grep -E '^File' | cut -d= -f2 > di_$1.m3u")'

2013-02-20 03:37:41

User: Zort

Functions: perl sed wget

Tags: playlist mpd digitally imported

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MPD + Digitally Imported

1.- Enter into the playlist path.

2.- Run the command.

3.- Playlists created!

Comments (82) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

FULLPATH=$(perl -e "use Cwd 'abs_path';print abs_path('$0');")

2013-02-01 20:09:34

User: follier

Functions: perl

Tags: perl cd dirname pwd variable cwd abs_path

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Get full directory path of a script regardless of where it is run from

Since none of the systems I work on have readlink, this works cross-platform (everywhere has perl, right?).

Note: This will resolve links.

perl -MModule::Name\ 9999 -e 1

2013-01-15 22:51:39

User: three18ti

Functions: perl

Tags: bash perl zsh

-1

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Find out if a module is installed in perl (and what version)

This attempts to load a Perl Module (-M flag) and use version 9999, since no module has a version this high, Perl exits either a) telling you the version of the module installed or b) tells you it can't find the module.

module_exists(){ perl -e 'use '$1 2>/dev/null; }

2013-01-11 14:47:07

User: putnamhill

Functions: perl

Tags: bash perl

-2

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Find out if a module is installed in perl

This version uses a bash function and does not print the path to the module.

perl -MFile::Find=find -MFile::Spec::Functions -Tlwe '$found=1; find { wanted => sub { if (/$ARGV[0]\.pm\z/) { print canonpath $_; $found=0; } }, no_chdir => 1 }, @INC; exit $found;' Collectd/Plugins/Graphite

2013-01-11 11:01:46

User: keymon

Functions: exit find perl

-2

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Find out if a module is installed in perl

Will check if the given module is installed in the @INC. It will print the path and return 0 if found, or 1 otherwise.

Based on script from SharpyWarpy in http://www.linuxquestions.org/questions/linux-general-1/how-to-list-all-installed-perl-modules-216603/

find . | xargs perl -p -i.bak -e 's/oldString/newString/;'

2012-11-28 17:11:18

User: RedFox

Functions: find perl xargs

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Find and replace text within all files within a directory

find . = will set up your recursive search. You can narrow your search to certain file by adding -name "*.ext" or limit buy using the same but add prune like -name "*.ext" -prune

xargs =sets it up like a command line for each file find finds and will invoke the next command which is perl.

perl = invoke perl

-p sets up a while loop

-i in place and the .bak will create a backup file like filename.ext.bak

-e execute the following....

's/ / /;' your basic substitute and replace.

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perl -E 'say $_,`tput setb $_`," "x(`tput cols`-length("$_")),`tput sgr0` for 0..(`tput colors`-1)'

2012-11-22 01:55:51

User: MarxBro

Functions: perl

Tags: perl color tput

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Show all available colors on your terminal.

Using perl and tput, show all the colors with numbers that your actual $TERM can handle.

If want to remove the numbers at beginning of new line, it should be something like this:

perl -E 'say `tput setb $_`," "x `tput cols`, `tput sgr0` for 0 .. (`tput colors` - 1)'

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perl -E 'say$_%15?$_%3?$_%5?$_:Buzz:Fizz:Fizzbuzz for 1..100'

2012-11-18 05:47:29

User: MarxBro

Functions: perl

Tags: perl fizzbuzz

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FizzBuzz in Perl

Just another FizzBuzz in Perl.

perl -e 'print "$_=$ENV{$_}\n" for keys %ENV'

2012-11-12 13:14:28

User: sgikas

Functions: perl

Tags: perl environment

-1

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Print environment information.

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