I have a file that contains a lot of these "/watch?v=VhsnHIUMQGM" and I would like to output the letter code using a perl one-liner. So I try perl -nle 'm/\"\/watch\?v=(.*?)\"/g' filename.txt but it doesn't print anything. What am I doing wrong? ...
Hi, I have got an archive of many fonts but i have troubble extracting them all into one folder. i tried to write a long script for 3 hours now, it somehow breaks on a path issue. i tried piping like find . -name *.zip|unzip -d ~/fonts but it doesnt work. i changed so much in the script i wrote, that it is not really presentable :(. eac...
Hi All, I've used regex's in sed before and used a bit of awk, but am unsure of the exact syntax I need here... I want to do something like: sed -i 's/restartfreq\([\s]\)*\([0-9]\)*/restartfreq\1$((\2/2))/2/g' \ my_file.conf where the second match is divided by 2 and then put back in the inline edit. I've read though that sed ca...
Hi everyone, I have a configuration file that has variables and value separate by spaces. I want to take the value (in the second column) of certain matches and inline edit the file, dividing this match by 2. I also would like to preserve spacing and use a ceiling function on the value. For example, the file: To recap, using an actu...
I know that usually you don't want one-liners/single commands to get too long but it seems like there's occasionally a longish one-liner that would benefit from replacing repetitive elements with a function. Is it possible to use a short function chop down the length of your command? For example there's no ceiling or round function ...
cat monday.csv 223.22;1256.4 227.08;1244.8 228.08;1244.7 229.13;1255.0 227.89;1243.2 224.77;1277.8 cat tuesday.csv 227.02;1266.3 227.09;1234.9 225.18;1244.7 224.13;1255.3 228.59;1263.2 224.70;1247.6 This Perl one-liner gives me the row with the highest value in the second column from the rows where in...
Trying to integrate the following Perl one-liner into a shell script. This code works within a Perl script but not as a one-liner executed from a shell script. I've tried replacing $host with a real hostname with no luck. #!/bin/ksh hosts="host1 host2 host3" PERL=/usr/bin/perl # Check to see if hosts are accessible. for host in $hos...
I use the following Perl syntax in my bash script: perl -i –pe 'next if /^ *#/; s/(\b|\D)$ENV{OLD }(\b|\D)/$1$ENV{NEW }$2/' file I want to find the OLD word without first "#" character in the file , then replaces the OLD word with NEW word My question: I want to print "replace $OLD with $NEW" each time perl replace the $OLD ...