http://www.lfscript.org/wiki/index.php/Quick_Start
https://github.com/8l/lfscript
Linux From Script (or 'LFScript') is an unofficial alternative for 'Automated Linux From Scratch'. LFScript includes thoroughly tested scripts generated from the LFS and BLFS books, with which you can build a complete Linux operating system from scratch. The scripts are layed out similarly to the LFS and BLFS books, which means that if you have read the LFS books, you should have no problem editing them to customize your system in any way you want.