_  _ _ |. _   _~_
               (/_(_(/_||_\  (  0)-_
                              )  -'
                        (\__--)  )
                         \=-__-=/

phlog 

    Ramblings, thoughts, hacking and other posts in what used to be
  ExpressIT web log (English & Spanish).

ITS

    Notes on MIT's A.I. lab Incompatible Timesharing System

TOPS-20

    Notes on Digital Equipement Corporation's TOPS-20
  Operating System for the PDP-10 computer

SDF

    Texts related to SDF Public Access Unix System

Writings 

    Texts of my own (English & Spanish)

MiKiwi

    A wiki attempt since 2005, assorted topics from server administ
  obscure operating systems, databases and howtos. (Spanish)