Scratch — Programming for kids

Scratch <a href="http://scratch.mit.edu/about">website.

Description from their site:

Scratch is a new programming language that makes it easy to create your own interactive stories, animations, games, music, and art — and share your creations on the web.

Scratch is designed to help young people (ages 8 and up) develop 21st century learning skills. As they create Scratch projects, young people learn important mathematical and computational ideas, while also gaining a deeper understanding of the process of design.

Linux awk command

Have you ever had a column-oriented text file, similar to a spreadsheet, but the columns weren't in the order you wanted? For instance, suppose you
had the following information in a file named "checkbook.orig":

COST         DATE            BALANCE
10.00         040198           1000.00
20.00         040298             980.00
30.00         040298             950.00

    The information is good, but you'd prefer to have the DATE column first, followed by the COST information in the second column, and the BALANCE column third.