Scientific/Programmable Linux calculator -console-

One thing I really like about GNU/Linux operating system, is that it has a lot of utilities which are easily to install, free, and secure, something other operating systems does not have.

One of those utilities is bc a handy calculator, with it you can perform easy calculations, or perform complicated calculus, you can even define your own functions, this utility is really useful.

You may say that it is equivalent to the HP you had when you were at University, well I had a Casio :).

There are two ways to use it, from the command line and using its interactive interface.