How to add / activate swap in Ubuntu 12.04 LTS

Source From: BLog.CripperZ.SG http://blog.cripperz.sg/how-to-add-activate-swap-in-ubuntu-12-04-lts/
About Linux Swapping

Linux RAM is composed of chunks of memory called pages. To free up pages of RAM, a “linux swap” can occur and a page of memory is copied from the RAM to preconfigured space on the hard disk. Linux swaps allow a system to harness more memory than was originally physically ava...
How to add / activate swap in Ubuntu 12.04 LTS
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