SDF Public Access UNIX System

As a Unix/Linux hobbyist user, the primary use of my website at is to have a basic reference information about these operating systems. Also, as an ARPA member, I use my shell account to check my email and usenet news reading. is a networked community of free software authors, teachers, librarians, students, researchers, hobbyists, computer enthusiasts, the aural and visually impaired. It is operated as a recognized non-profit 501(c)(7) and is supported by its members.

Established since 1987, at you can get a free user membership account with unix shell and hundreds of shell and network utilities.

Last update: 2019-07-19T00:06:39+00:00