Ping is not a command for downloading files. There are many things wrong with this document, based solely on a cursory examination of the table of contents. I

Ping is not a command for downloading files. There are many things wrong with this document, based solely on a cursory examination of the table of contents. It’s clear that a lot of work has been done here, but it also needs a lot of editing and correction by someone who actually knows what they’re doing.