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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

Encoding with base64

Terminal - Encoding with base64
echo "Hello world" | base64
2009-04-27 15:00:08
User: P17
Functions: echo
Encoding with base64

Also works with files:

cat file

Hello world

base64 file


To decrypt use the -d option:

echo SGVsbG8gd29ybGQK | base64 -d

Hello world


There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Encryption is not the word I would use. Because what you are doing is not by any means creating a difficult-to-read version, since anybody has the tool to "decrypt" it.

I would rather use the word "obfuscation", and I'm not even so sure of that.

Comment by pruneau 391 weeks and 2 days ago

It's not encryption. It's hashing. Use gpg for encryption, or some other tool like truecrypt. My fav algo is rijndael

Comment by linuxrawkstar 391 weeks and 2 days ago

Base64 is not hashing either. it is simply character translation, encoding 8 bit characters into 6 bits. Useful for stuff that cannot handle full ASCII such as email. Use something like md5 for a true hash.

Comment by nitehawk 391 weeks and 2 days ago

it's called coding. Not encryption

Comment by oernii 391 weeks and 1 day ago

Yes, this is encoding, not encryption. The benefit of base64 encoding, though, is that any arbitrary binary stream may be base64-encoded. (ASCII has nothing to do with it. In fact, to be precise, ASCII is a 7-bit encoding scheme. Anybody remember parity bits?)

Comment by bjimba 390 weeks and 5 days ago

Encryption method are not necessarily hard to break. base64 is an encryption method as it turns plaintext into something that you can only read if you have special knowledge. It is not the worst method either; a Cesar cipher like rot13 maps identical characters in the plaintext to identical characters in the ciphertext, base64 does not.

Comment by penpen 390 weeks and 3 days ago

> Yes, this is encoding, not encryption.

Yes, you`re right.

I changed the title from "encryption" into "encoding".

Comment by P17 390 weeks ago

Do not add a line break in your codded string. Use the -n echo's option:

echo -n "Hello world" | base64

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Comment by khiladi344 11 weeks and 5 days ago

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