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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

Generate MD5 hash for a string

Terminal - Generate MD5 hash for a string
md5sum <<<"test"
2010-11-24 12:04:41
User: unefunge
Functions: md5sum
Generate MD5 hash for a string


There are 3 alternatives - vote for the best!

Terminal - Alternatives
echo -n "string" | md5sum -
2009-03-10 21:01:36
User: cryptema
Functions: echo md5sum

A useful way to generate the MD5 hash for a string by command line

printf "$string" | md5sum

Know a better way?

If you can do better, submit your command here.

What others think

Just remember the here string will add a line feed and change your digest.

Comment by putnamhill 308 weeks and 4 days ago

What does "

Comment by qiaomuf 307 weeks and 5 days ago

what does what?

Comment by unefunge 307 weeks and 4 days ago

what does "

is it just < and

Comment by capncanuck 303 weeks and 4 days ago


what does "<<<" mean?

is it just < and << together?

Comment by capncanuck 303 weeks and 4 days ago

ok for future reference: if you want to type '<' type &lt;

Comment by capncanuck 303 weeks and 4 days ago

I think I got it figured out:

cmd &lt;&lt;&lt; $string

is analogous to

echo $string | cmd
Comment by capncanuck 303 weeks and 4 days ago

The first one didn't work, but the second was successful, didn't understand why, because it seems to be valid.

Comment by unixmonkey19104 293 weeks and 2 days ago

Your point of view

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