BOL: Wire posts tagged with 'TipsOftheDay'

Wire post by Rahul Nayak

Rahul Nayak — Mon, 07 Sep 2015 12:14:57 -0500

Search and replace the string 'this' with the string 'that' in the file filename. perl -p -i -e 's/this/that/g' filename #Perl #Trick #PerlOneLiner #Tipsoftheday #Replace #FindandReplace

Wire post by Jitendra Narayan

Jitendra Narayan — Thu, 09 Jul 2015 19:55:02 -0500

Print all possible 2 combination of words ( ATGC): $letter = join',','A','T','G','C'; @abc=glob "{$letter}{$letter}"; foreach (@abc) { print "$_\n"; } #Perl #PerlTrick #TipsOftheDay

Wire post by Jitendra Narayan

Jitendra Narayan — Thu, 12 Feb 2015 19:45:33 -0600

Get line number with Perl $fh->input_line_number() #Perl #Tipsoftheday #Tricks

Wire post by Shikha Logwani

Shikha Logwani — Thu, 06 Feb 2014 01:23:11 -0600

regex (?(3)foo|fu)bar - Matches foo if 3rd subpattern has matched, fu if not #Tipsoftheday #Regex

Wire post by Jitendra Narayan

Jitendra Narayan — Mon, 07 Oct 2013 06:35:41 -0500

Convert space separated data to tab separated: perl -p -i -e 's/\s+/\t/g' file.txt #Perl #Tipsoftheday #Perlonliner

Wire post by Abhimanyu Singh

Abhimanyu Singh — Tue, 01 Oct 2013 07:03:26 -0500

To print the matching pattern line perl -ne '/pattern/ && print' infile.gtf #Perloneliner #Tipsoftheday

Wire post by Jitendra Narayan

Jitendra Narayan — Fri, 20 Sep 2013 16:41:36 -0500

To count the number of matches in a string !!! $str = "one.two.three.four"; $n =()= $str =~ /\./gi; print $n; #Tipsoftheday #Perl

Wire post by Poonam Mahapatra

Poonam Mahapatra — Thu, 29 Aug 2013 08:36:18 -0500

Number all lines in a file; perl -pe '$_ = "$. $_"': #Tipsoftheday #Perl

Wire post by Jitendra Narayan

Jitendra Narayan — Wed, 28 Aug 2013 15:33:30 -0500

Generate N base genome: perl -e '@b=qw/A T G C/;print ">Genome\n";while($l

Wire post by Jitendra Narayan

Jitendra Narayan — Tue, 20 Aug 2013 16:40:28 -0500

To round a floating-point value to a certain number of decimal places: $rounded = sprintf("%.2f", $unrounded); #Tipsoftheday #Perl

Wire post by Jitendra Narayan

Jitendra Narayan — Fri, 16 Aug 2013 12:17:10 -0500

To get all the module dependencies for yourScript.pl program. $ scandeps.pl yourScript.pl #Perl #Tipsoftheday

Wire post by Jitendra Narayan

Jitendra Narayan — Wed, 14 Aug 2013 19:16:35 -0500

To check: Does an array has all equal values. if (keys %{{ map {$_, 1} @test }} == 1) { # all equal } #Tipsoftheday #Perl

Wire post by Jitendra Narayan

Jitendra Narayan — Sat, 10 Aug 2013 15:01:33 -0500

Write something at the bottom of the file without opening it. perl -p -i -e 'eof && s/$/\nWord/;' #Tipsoftheday #Perloneliner

Wire post by Jitendra Narayan

Jitendra Narayan — Fri, 09 Aug 2013 15:29:49 -0500

Do you want to compile your Perl program without running it, try $ perl -c #Tipsoftheday #Perl

Wire post by Archana Malhotra

Archana Malhotra — Fri, 12 Jul 2013 11:06:54 -0500

print "$^O\n"; To print the OS name in perl #Tipsoftheday #Perl #RegularExpression