[ale] how do I increase Linux swap file size?

[cluon at geeklabs.com (Mike Harrison)]

On Tue, 18 Jan 2011, Michael Trausch wrote:

> Even using my desktop system for heavy tasks, I rarely dip into swap usage.
> I have 6 GB RAM, and unless I am being pretty wasteful everything fits in
> that.  Even multilayer GIMP images while compiling the kernel and GCC seems
> to not fill up memory (but I can say bye bye to I/O bandwidth...)

At modern day ram prices, using SWAP is a sign of either not having enough 
ram, doing something stupid, or really bad programming.
It's a wonderful safety net for reasons 2 and 3, sure beats a machine 
locking hard..