Since Knoppix is KDE, if I recall, probably Kate, though I'm sure vim's on there.
I forget the command but the Knoppix docs should say - basically there's a command to write a little tarball to your hard drive (probably floppy's an option, too) and you have to start Knoppix with an option like Knoppix_home=/partition to reload the settings (wrong syntax, I'm sure, but it's just an example). Knoppix used to have a sort of HTML readme on the desktop as well as boot up messages that explained all this.
For shell scripting, each starts with
#!/path/to/interpreter (usually sh)
and each must have
chmod 700 (or the like)
applied to it to make it executable. The rest is just stringing together commands and flow-control constructs and there's lots of sites on that with more details, as well as your man pages on your system - especially the one for the interpreter/shell you're using.
-- Just realized I compared Kate and vim to Notepad. But I mean, they're probably the editors you want to try scripting with. They're nothing like notepad, except that they come with the system by default and edit text.