http://www.linuxfromscratch.org/
http://www.linuxfromscratch.org/lfs/
    http://www.linuxfromscratch.org/lfs/download.html
    http://www.linuxfromscratch.org/lfs/read.html
    https://book.linuxfromscratch.org.ru/systemd/chapter03/introduction.html
http://www.linuxfromscratch.org/blfs/
    http://www.linuxfromscratch.org/blfs/view/svn/
http://www.linuxfromscratch.org/alfs/

LaCroix - Mastering Linux Network Administration

2022
LPI - Linux Essentials 1.6
    6E986A2F5C8D54E6D0F536EF5A3414A5
2020
Negus - Linux Bible 10th ed
    B74EA78F1465C9D9D8DDFA693C3069C8
    68A63FA40A301299F4B21CB8899414D8
    5D676176B7FCBA6F2FBC6E21CCE204BC
AlKabary - Learn Linux Quickly
    79293B10D36AAD293CBB02D7C35E9437
    BD0027DA02EA97B459AB08B6D0A6F8A3
2018
Kerrisk - Linux API ru
2012
Cobbaut - Linux Fun
    A76F7441B892F22493ACCF1A050E9CA8
2010
https://docs.altlinux.org/books/
https://docs.altlinux.org/books/altlibrary-linuxintro2.pdf