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Commands tagged bc

Commands tagged bc from sorted by
Terminal - Commands tagged bc - 8 results
echo $((3.0/5.0))
echo "5 k 3 5 / p" | dc
2009-09-03 00:21:54
User: xamaco
Functions: echo
-1

using bc is for sissies. dc is much better :-D

Polish notation will rule the world...

bc -l <<< s(3/5)
2009-09-02 15:41:39
User: akg240
Functions: bc
2

-l auto-selects many more digits (but you can round/truncate in your head, right) plus it loads a few math functions like sin().

echo "scale=4; 3 / 5" | bc
2009-08-21 21:51:46
User: foob4r
Functions: echo
3

allows you to use floating point operations in shell scripts

echo $( du -sm /var/log/* | cut -f 1 ) | sed 's/ /+/g'
2009-07-31 21:42:53
User: flux
Functions: cut du echo sed
Tags: echo bc
2

When you've got a list of numbers each on its row, the ECHO command puts them on a simple line, separated by space. You can then substitute the spaces with an operator. Finally, pipe it to the BC program.

? () { echo "$*" | bc -l; }
2009-06-28 20:15:30
User: fizz
Functions: bc echo
29

defines a handy function for quick calculations from cli.

once defined:

? 10*2+3
echo "obase=2; 27" | bc -l
2009-03-25 09:54:50
User: polar
Functions: bc echo
Tags: bc
17

Easily convert numbers to their representations in different bases. Passing

"ibase=16; obase=8; F2A"

to bc will convert F2A (3882 in decimal) from Hex to Octal, and so on.

echo "$math_expr" | bc -l
2009-03-25 09:46:01
User: polar
Functions: bc echo
Tags: bc
2

Useful for quick calculations at the command line. $math_expr is any arithmetic expression (see sample output):

4.5*16+3^2

s(3.1415926/2)

More options in the bc man page.