Beast Linux Tip:

To avoid having to scroll through your history to find something, do this command:

history | grep what-you-want

the "|" is pipe and it takes the first command and feeds the output into the 2nd one, and "grep" searches for something, so you're literally taking your history and feeding it into a search 

 ctrl r what-you-want 

 CTRL+R and the just search 

 ctrl+R is better.
it's called reverse search.