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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Commands using join from sorted by
Terminal - Commands using join - 8 results
join employee.txt bonus.txt
2012-06-26 18:36:11
User: ankush108
Functions: join
Tags: sql join

Join command combines lines from two files based on a common field.

echo "LINUX,DIR,FILE1,FILE2,FILE3" | perl -aF, -nle 'my ($fld1, $fld2, @fields) = @F; while(@fields) { print join ",", $fld1, $fld2, splice(@fields, 0, 1) }'
2011-08-22 18:27:12
User: mindrape
Functions: echo join perl

Lets say you have a file with the following layout:


You want the file to look like this:




This perl command does it for you.

perl -e 'printf join ".", map int rand 256, 1 .. 4;'
echo sortmeplease | perl -pe 'chomp; $_ = join "", sort split //'
perl -wl -e [email protected]=<>; for $i (0 .. $#f) { $r=int rand ($i+1); @f[$i, $r][email protected][$r,$i] if ($i!=$r); } chomp @f; print join $/, @f;' try.txt
perl -le 'print join $/, @INC'
2009-09-22 22:18:35
User: chuckr
Functions: join perl

This will show where your Perl installation is looking for modules.

join file1.txt file2.txt > file3.txt
perl -le 'print join ", ", map { chomp; $_ } <>'
2009-02-06 12:50:43
User: jozef
Functions: join perl

joins multiple lines to create single line with comma separated values. for example if we have an email addresses one per line (copy&paste from spreadsheet) it will oputput one line with comman separated addresses to put it to email client.