BASH: math with variables

[ryanVickers]

I would like to do some simple math for some code.

ex.
variableA=variableB*variableC

what could be the code for this?

[Ramses de Norre]

variableA=$((variableB*variableC))

[ryanVickers]

and what about

variableA=variableA "Divided by" 1000 * 1024

[Ramses de Norre]

variableA=$(($variableA/1000*1024))

Mind to use braces when needed, I wasn't sure whether you meant /1000*1024 or /(1000*1024).

[ryanVickers]

thanks

I still needed to do a little testing, but I guess it's better to do the multiplying first and then divide

[cwaldbieser]

thanks

I still needed to do a little testing, but I guess it's better to do the multiplying first and then divide

Note that bash does integer math. If you need fractions, you need another program like "bc" or "awk".

[ryanVickers]

ok then. This is perfect for now though

[Izziedee]

Wow, 4 years later, just the answer I was looking for. Thanks!

[sisco311]

Necrobumping.

Thread Closed.

New one here: http://ubuntuforums.org/showthread.php?t=1852886