Anyone who is not interested in the command line, or anyone looking for a detailed reference to all available GNU/Linux tools should look elsewhere. This is only a summary, while it does list many
commands, it's not a complete listing (I don't think it's possible to make a complete listing anyway).
This document would not be unlikely to be of interest to those who already have an expert knowledge of the command line interface and do require any reference information. Or those readers who
require detailed lists of options for each command, the man pages are better suited to this purpose.