Under System Variables, choose PATH and Edit. Add c:\scratch\ to the end of your existing path. Now, to add text to a file named c:\scratch\scratch.txt, hit Windows-R, type "add" and Enter.

It's easy to add a few lines of text to files on Linux, but there are tools that make it easier to add many lines.

Using Launchy, you can append text to files, schedule appointments, add to your to-do list, set reminders, and more—it just takes a little setting up.