In the lshort.pdf book, Preface section, page vi, the following lines are present.
LaTeX is available for most computers, from the PC and Mac to large UNIX and VMS systems. On many university computer clusters you will find that a LaTeX installation is available, ready to use. Information on how to access the local LaTeX installation should be provided in the Local Guide .
The footnote  says this.
 Each LaTeX installation should provide a so-called LaTeX Local Guide, which explains the things that are special to the local system. It should be contained in a file called local.tex. Unfortunately, some lazy sysops do not provide such a document. In this case, go and ask your local LaTeX guru for help.
On my Debian 8.3 system with texlive installed, I can't find local.tex file anywhere on the system.
$ locate local.tex $
Where can I find this file on a Debian 8.3 system? My Debian system is on my personal laptop and there is no other lazy sysop apart from me who did not provide the document. Right now, tex.stackexchange.com is the only local LaTeX guru I have that I can ask for help.