# Command line calculator

calc() { bc <<< \$*; }

1
2010-10-07 08:44:28

## 5 Alternatives + Submit Alt

• works with fractions like 1/3.5

4
awk "BEGIN{ print \$* }"
· 2010-10-07 16:13:41
• 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. Show Sample Output

1
calc() { python -c "from math import *; print \$1"; }
· 2010-10-07 08:26:39
• 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.

1
python -ic "from __future__ import division; from math import *; from random import *"
· 2011-10-24 19:47:27
• 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 Show Sample Output

0
alias calc='python -ic "from math import *; from random import *"'
· 2011-10-24 08:15:41
• 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).

-1
calc() { echo "scale=4; \${*//,/.}" | bc -l; }
· 2011-10-24 19:58:20

### What Others Think

the bc-version does not calc 1/3, no fractions, no decimal digits.
maelcum · 726 weeks and 5 days 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` 3.1428571428
tamouse · 672 weeks and 1 day ago

### What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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