What it is:
Powerful free operating system. Linux is modular making it very flexible designed with security in mind.
Less allows both forward and backward movement. Less does not require the whole file be loaded before viewing (speed). Navigation commands are similar to VIM.
|Pattern Search - Takes you to next occurence.
|Next match in forward, while in search.
|for previous match backward.
|h or H
|Pulls up the help command list which is actually quite useful