Linux for beginners

• Make Linux code easy to learn for beginners.

• Make Linux source code easy to read and debug to follow the code path.

Quick start (Dev on Ubuntu 24.04)

1. Install VSCode, C/C++ extension and gdb-multiarch on a Linux distro.
2. Using ./build_toolchain.sh to build musl-gcc toolchain.
3. Using ./build_linux.sh to build the linux source code.
4. Using ./make_initramfs.sh to make initramfs including busybox.
5. Using ./run.sh to start the qemu and press F5 to start the debugger.

References

1. Linux: https://www.kernel.org/
2. musl libc: https://musl.libc.org/
3. busybox: https://www.busybox.net/
4. musl-cross-make: https://github.com/richfelker/musl-cross-make

Disclaimer

• Focus on arm64(aarch64) only. Maybe not right for other architecture(amd64, ia64...) or 32bit architecture(i386, arm...).

• Learning purpose only and DO NOT use my modified code in production before tests.

• Some of my modification may be not the orginal intent of upstream source code. Please refer to upstream source code if you want to contribute to upstream repo.