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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.
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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:

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Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

The 1 millionth fibonacci number

Terminal - The 1 millionth fibonacci number
gcc -x c -o /tmp/out - -lgmp <<< '#include <stdlib.h> ... SEE SAMPLE OUTPUT FOR FULL COMMAND
2009-09-10 02:10:46
User: hank
Functions: c++ gcc
-5
The 1 millionth fibonacci number

It's hard to beat C. This is just slightly faster than the bc version on my machine.

real 0m26.856s

user 0m25.030s

sys 0m0.024s

Requirements: libgmp headers, gcc.

Alternatives

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

Sorry Hank, you're 2 secs slower than the bc version on an atom 1.6Ghzs netbook. :)

Nice try though.

For the cash prize you need to use commonly available shell tools rather than custom c code (After all, I could probably install mathematica and beat bc!)

Comment by Escher 363 weeks and 5 days ago

Also, ~12 secs slower than bc version on a Core 2 Duo (48 secs v 36 secs)

Comment by Escher 363 weeks and 4 days ago

I voted this down because we're really stretching the limits of what is "command line fu" here. A few more like this and this place loses its charm.

I wish people would try and stick to simlpe, short-ish, command lines. Even if the utility used is not a standard or default one (exiftool in one of the other recent posts, for instance), the *command* should be one you wouldn't mind typing or pasting if needed

Comment by sitaram 363 weeks and 2 days ago

Your point of view

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