A small tutorial on how to use awk, Perl and the shell to double space between lines. Hopefully this answers all requests for additional material :)

Taking a look at variable scope, pipes and while-loops in various Linux and Unix shells.

Perl one-liners are small and awesome Perl programs that fit in a single line of code and they do one thing really well.

I just finished writing my third e-book about Perl one-liners. Perl one-liners are small and awesome Perl programs that fit in a single line of code and they do one thing really well. These things include changing line spacing, numbering lines, doing calculations, converting and substituting text, deleting and printing certain lines, parsing logs, editing files in-place, and many more.

If you know a guy who knows a guy, you already understand this concept ;)

I created perl1line.txt that contains over a hundred various Perl recipes for text processing. They include changing line spacing, changing text, deleting certain lines, doing calculations, and many others.

This tutorial describes how awk can use operators to increment or decrement as well as other arithmetic functions. awk uses four arithmetic functions:
+ addition
- subtraction
* multiplication and
/ division.

One of these is a photograph taken by the Hubble space telescope on December 17, 2002, featuring the variable star V838 Monocerotis. The other is the same photograph overlaid with a familiar logo. Can you tell which is which?

There are many options with USB Flash drives now. Here is a tutorial on how to install Damn Small Linux on a Pen Drive. This is version 4.4.7, the newest version. Plugin your Pen Drive in to the USB slot. For DSL it is a great one to experiment with because you can use a small Pen Drive to work with. A 256 MB Pen Drive allows you a lot of space since the operating system is only 50 MB.