05-28-2016
Well if you really want to "tweak the guts of the O/S" I guess you need to start from source code; is that what you mean?
There are a number of Linux distros that allow you to download the whole source code and then compile if you've got CPU cycles to burn and a few hours to do it in. I know that Ubuntu will allow that. Also Gentoo provides kernel tailoring letting you build the O/S you want.
Understanding all this can be an issue if you haven't done it before. There's a project called Linux From Scratch (LFS) which provides source code but also a book in both digital and hardcopy which describes the internals of how the kernel is built. That might be a good place to start.
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LEARN ABOUT DEBIAN
scratch
scratch(1) General Commands Manual scratch(1)
NAME
Scratch - An easy to use interactive programming environment for ages 8 and up.
Description
Scratch is an easy, interactive, collaborative programming environment designed for creation of interactive stories, animations, games,
music, and art -- and sharing these 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. This man page contains basic information about Scratch. For additional information, see the
Scratch website at http://scratch.mit.edu.
OPTIONS
Options are set through the .scratch.ini file in the user's home directory. For instructions on how to edit this file, see
http://info.scratch.mit.edu/Network_Installation.
BUGS
Please report bugs to the package maintainer. For the most recent version of this package, see http://info.scratch.mit.edu/Linux_installer
FILES
/usr/bin/scratch - scratch startup script
/usr/lib/scratch/ - Contains Scratch.image (Squeak image containing Scratch code), and scratch.ini file
/usr/share/scratch/- Contains subdirectories with Scratch media library, sample projects, and language files.
COPYRIGHT
Scratch is Copyright (C) 2011 Massachusetts Institute of Technology and released under the GPL v2. See the LICENSE file included with the
source code. The Scratch logo, the Scratch cat, and Gobo are trademarks of MIT and may not be used in substantially modified programs based
on the Scratch source code. Scratch is developed by the Lifelong Kindergarten group at the MIT Media Lab. See http://scratch.mit.edu
scratch(1)