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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

Command line calculator

Terminal - Command line calculator
calc() { bc <<< $*; }
2010-10-07 08:44:28
User: hemanth
Functions: bc
Command line calculator


There is 1 alternative - vote for the best!

Terminal - Alternatives
awk "BEGIN{ print $* }"
2010-10-07 16:13:41
User: maelcum
Functions: awk

works with fractions like 1/3.5

calc() { python -c "from math import *; print $1"; }
2010-10-07 08:26:39
User: asmaier
Functions: python

This function defines a command line calculator that handles everything pythons math module can handle, e.g. trigonometric functions, sqrt, log, erf, ... (see http://docs.python.org/library/math.html). It even knows about the constants pi and e.

python -ic "from __future__ import division; from math import *; from random import *"
2011-10-24 19:47:27
User: fpunktk
Functions: python

This opens a python command line. You can use math and random and float-division is enabled (without appending .0 to integers). I just don't know how to specify a standard precision.

alias calc='python -ic "from math import *; from random import *"'
2011-10-24 08:15:41
User: Bonster
Functions: alias

use python as calculator, press ctrl+d to exit

reminder: when doing factions add atleast one decimal number like so

22.0/7 or 22/7.0

calc() { echo "scale=4; ${*//,/.}" | bc -l; }
2011-10-24 19:58:20
User: fpunktk
Functions: bc echo

This is an "argument calculator" funktion. The precision is set to 4 and you can use dot (.) or comma (,) as decimal mark (which is great for german users with a comma on the numpad).

Know a better way?

If you can do better, submit your command here.

What others think

the bc-version does not calc 1/3, no fractions, no decimal digits.

Comment by maelcum 315 weeks and 1 day ago

it's simple enough add the scale command. i keep it in a ~/.bcrc file and thus:

calc () { bc <<< "scale=10;$*" ; }

and bob's your uncle:

calc 22 / 7


Comment by tamouse 260 weeks and 5 days ago

Your point of view

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