Found 2 books

LPI Linux Certification in a Nutshell

[en] LPI Linux Certification in a Nutshell O'Reilly Media

Adam Haeder & Stephen Addison Schneiter & Bruno Gomes Pessanha & James Stanger

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LPI Linux Certification in a Nutshell · 3rd Edition

[en] LPI Linux Certification in a Nutshell · 3rd Edition O'Reilly Media

Haeder, Adam & Schneiter, Stephen Addison & Pessanha, Bruno Gomes & Stanger, James

download read it!