Hi everyone

If you use Linux you have to need a handbook.I saw this problem and i develop an Android App.You can use this app and this project is open source project.

Index
-File Commands
-Search Commands
-Compression Commands
-FTP Commands
-Network Commands
-Permission Commands
-System Commands
-Git Commands
-APT Commands
-Pacman Commands
-My Commands(You can create and save commands )
-Online Commands(You can share commands to other users)

And you this commands transfer to pdf.