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Commands using perl from sorted by
Terminal - Commands using perl - 337 results
perl -wlne 'print $1 if /(([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5]))/' iplist
2009-09-17 16:14:52
User: salparadise
Functions: perl

if you want to only print the IP address from a file.

In this case the file will be called "iplist" with a line like "ip address"

it will only print the "" portion

perl -i -pe 's/\xef\xbb\xbf//g' <file>
perl -e "print scalar(gmtime(1247848584))"
2009-09-11 06:19:09
User: opexxx
Functions: perl
Tags: perl

print scalar gmtime

perl -lne '$l{$_}=length;END{for(sort{$l{$a}<=>$l{$b}}keys %l){print}}' < /usr/share/dict/words | tail
curl -u username --silent "https://mail.google.com/mail/feed/atom" | perl -ne 'print "\t" if /<name>/; print "$2\n" if /<(title|name)>(.*)<\/\1>/;
2009-09-09 23:25:05
User: suxer
Functions: perl

notice what happens when there is more than one unread message in a thread...

also people please dont hardcode the password when you use curl. Leave it out and curl will ask you when it runs. Please...?

curl -u username --silent "https://mail.google.com/mail/feed/atom" | perl -ne 'print "\t" if /<name>/; print "$2\n" if /<(title|name)>(.*)<\/\1>/;'
2009-09-08 06:53:39
User: sitaram
Functions: perl

notice what happens when there is more than one unread message in a thread...

also people please dont hardcode the password when you use curl. Leave it out and curl will ask you when it runs. Please...?

system_profiler SPApplicationsDataType | perl -nl -e '@al=<>; $c=@al; while($j<$c){ $apps[$i].=$al[$j]; $i++ if ($al[$j] ) =~ /^\s\s\s\s\S.*:$/; $j++} while($k<$i){ $_=$apps[$k++]; if (/Kind: PowerPC/s) {print;}}'
2009-09-06 20:56:48
User: drewk
Functions: perl
Tags: Os X perl

This finds all the PowerPC apps recognized by OS X.

A better version is:

system_profiler SPApplicationsDataType 2> /dev/null | perl -

wnl -e '$i=$j=$k=$p=0; @al=; $c=@al; while($j

s[$i].=$al[$j]; $i++ if ($al[$j]) =~ /^\s\s\s\s\S.*:$/; $j++} while($k

apps[$k++]; if (/Kind: PowerPC/s) {print; $p++;}} print "$i applications, $p P

owerPC applications\n\n"'

but that is more than 255 characters...

lspci -v | perl -ne '/VGA/../^$/ and /VGA|Kern/ and print'
for x in `seq 0 25 $(curl "http://www.commandlinefu.com/commands/browse"|grep "Terminal - All commands" |perl -pe 's/.+(\d+),(\d+).+/$1$2/'|head -n1)`; do curl "http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/$x" ; done > a.txt
2009-08-27 11:02:53
User: SuperFly
Functions: grep head perl

'jot' does not come with most *nix distros, so we need to use seq to make it work. This version tested good on Fedora 11.

for x in `jot - 0 \`curl "http://www.commandlinefu.com/commands/browse"|grep "Terminal - All commands" |perl -pe 's/.+(\d+),(\d+).+/$1$2/'|head -n1\` 25`; do curl "http://www.commandlinefu.com/commands/browse/sort-by-votes/plaintext/$x" ; done >a.txt
2009-08-25 21:57:15
Functions: grep head perl

This is an extension of a previous command by satyavvd on 2009-07-23 12:04:02, but this one grabs the whole archive. Hard coded numbers in previous script capped number of commands that could be fetched. This one grabs them all regardless of how big the archive gets.

perl -i'.bak' -pe 's/old/new/g' <filename>
perl -e 'print scalar(gmtime(1234567890)), "\n"'
find /var/www/ -type f -name ".htaccess" -exec perl -pi -e 's/AddHandler[\s]*php(4|5)-cgi/AddHandler x-httpd-php\1/' {} \;
2009-08-21 21:55:22
User: foob4r
Functions: find perl

Alter "AddHandler php5-cgi .php" and "AddHandler php4-cgi .php" entries to new "AddHandler x-httpd-php5 .php" respective php4 entries in all .htaccess files under /var/www

git diff --numstat -w --no-abbrev | perl -a -ne '$F[0] != 0 && $F[1] !=0 && print $F[2] . "\n";'
2009-08-19 05:07:58
User: lingo
Functions: diff perl

Only shows files with actual changes to text (excluding whitespace). Useful if you've messed up permissions or transferred in files from windows or something like that, so that you can get a list of changed files, and clean up the rest.

perl -F' ' -MDate::Format -pale 'substr($_, index($_, $F[1]), length($F[1]), time2str("%C", $F[1]))' file.log
2009-08-13 13:57:33
Functions: perl
Tags: perl log

When you have one of those (log)files that only has epoch for time (since no one will ever look at them as a date) this is a way to get the human readable date/time and do further inspection.

Mostly perl-fu :-/

perl -F',' -ane '$a += $F[3]; END { print $a }' test.csv
2009-08-11 15:08:58
Functions: perl
Tags: awk column CSV sum

More of the same but with more elaborate perl-fu :-)

perl -p -i -e 's/this/that/g' filename
perl -ne 'split /,/ ; $a+= $_[3]; END {print $a."\n";}' -f ./file.csv
ifconfig -a | perl -nle'/(\d+\.\d+\.\d+\.\d+)/ && print $1'
2009-07-31 09:49:17
User: sneaker
Functions: ifconfig perl

works on Linux and Solaris. I think it will work on nearly all *nix-es

find . *oldname* | grep oldname | perl -p -e 's/^(.*)(oldname)(.*$)/mv $1$2$3 $1newname$3/' | sh
perl -e 'if(opendir D,"."){@a=readdir D;print $#a-1,"\n"}'
2009-07-23 20:14:33
User: recursiverse
Functions: perl
Tags: perl ls
time perl -e 'if(opendir D,"."){@a=readdir D;print $#a - 1,"\n"}'


real 0m0.497s

user 0m0.220s

sys 0m0.268s

time { ls |wc -l; }


real 0m3.776s

user 0m3.340s

sys 0m0.424s


** EDIT: turns out this perl liner is mostly masturbation. this is slightly faster:

find . -maxdepth 1 | wc -l

sh-3.2$ time { find . -maxdepth 1|wc -l; }


real 0m0.456s

user 0m0.116s

sys 0m0.328s

** EDIT: now a slightly faster perl version

perl -e 'if(opendir D,"."){++$c foreach readdir D}print $c-1,"\n"'

sh-3.2$ time perl -e 'if(opendir D,"."){++$c foreach readdir D}print $c-1,"\n"'


real 0m0.415s

user 0m0.176s

sys 0m0.232s

perl -pe 's/,/\t/g' < report.csv > report.tsv
wget -q -O - 'URL/full?orderby=starttime&singleevents=true&start-min=2009-06-01&start-max=2009-07-31' | perl -lane '@m=$_=~m/<title type=.text.>(.+?)</g;@a=$_=~m/startTime=.(2009.+?)T/g;shift @m;for ($i=0;$i<@m;$i++){ print $m[$i].",".$a[$i];}';
2009-07-23 14:48:54
Functions: perl wget

substitute the URL with your private/public XML url from calendar sharing settings

substitute the dates YYYY-mm-dd

adjust the perl parsing part for your needs

ifconfig | perl -nle'/dr:(\S+)/ && print $1'
2009-07-23 09:33:31
User: xsawyerx
Functions: ifconfig perl

Fetches the IPs and ONLY the IPs from ifconfig. Simplest, shortest, cleanest.

Perl is too good to be true...

(P.S.: credit should go to Peteris Krumins at catonmat.net)

ifconfig $DEVICE | perl -lne '/inet addr:([\d.]+)/ and print $1'
2009-07-21 13:48:19
User: jdob
Functions: ifconfig perl
Tags: IP

Found this useful for scripts where I needed to work with the machine's IP. If $DEVICE is not specified, this will return all IPs on the machine. If $DEVICE is set to a network adapter, it will return just that adapter's IP.