Jon Jensen

I live in Teton Valley, Idaho (near Yellowstone National Park) and work at End Point Corporation on various Internet-related projects: web applications, databases, e-commerce, scalability, system administration, and security, and occasionally, Android application development. I’m a radio amateur (“ham”) with call sign KG7TXN.

I write on the End Point blog and Somusing, blog of my wife, Erin.

Other places to find me on the web: Twitter Facebook Instagram LinkedIn End Point

My email address is You may encrypt messages to me using my PGP/GnuPG 2012 4096-bit RSA public key. (For historical reference: My 1998 DSA public key and my 1994 RSA public key.)

A random quotation from my collection:

In this miserable state of mind, I began to understand, toward the end of my stay in prison, that a trap was being laid for me: a relatively innocent turn of phrase—or so I thought at the time—in one of my requests for release was to be published in a falsified version in order to discredit me. I had no idea how to stop this from happening, or how to defend myself against it. It was a very dark time for me, but then odd things began to happen. If I remember correctly, instead of the usual books, like Far from Moscow, I suddenly had delivered to my cell Goethe’s Faust, and then, right after that, Doctor Faustus by Thomas Mann. I had strange dreams and was haunted by strange ideas. I felt as though I were being, in a very physical way, tempted by the devil. I felt that I was in his clutches. I understood that I had somehow become involved with him. The experience of having something misappropriated in this way—something I had actually thought and written, something that was true—clarified for me with fresh urgency that the truth is not simply what you think it is; it is also the circumstances in which it is said, and to whom, why, and how it is said.

—Václav Havel, Disturbing the Peace (1990), p. 67

quotation #32 of collection of 813 | another random quotation

An interactive map of various churches we visited in north England in 2013, with links to our blog posts and photos about each: Churches in north England, 2013.

More about some of my interests:

I support free software and open source. Don’t be a sharecropper! I contribute to projects including Interchange, DevCamps, and Bucardo, and keep some old scripts around.

Some Unicode things I keep handy:

Other free software I work most often with: Vim, GNU Screen, tmux, awesome window manager, Signal private messenger, Git, Perl, Ruby, Python, Go, Android, PHP, PostgreSQL, Linux (mostly Red Hat/Fedora, Ubuntu, Debian), OpenBSD, OpenSSH, Alpine, Postfix, Dovecot, GnuPG, rsync, mtr, and Nmap, just as a sampling. Thanks to all free software developers for your time and efforts!

Johann Sebastian Bach composed some of my favorite music. See these freely redistributable Bach sheet music PDFs and the James Kibbie complete Bach organ works recordings. Mutopia collects freely usable music scores. Thanks to those who typeset the music and gave it away!

Several years ago, a tree fell on our car, so I wrote up the story to share.

My novice linguistics research: I wrote a paper for Linguistics 490 (senior seminar) taught by John Robertson, winter semester 1998 at Brigham Young University. It examines how Hebrew verb patterns (binyanim) may be semantically grouped using C.S. Peirce’s universal categories. The paper: Hebrew Verb Pattern Tendencies Clarified by Peirce’s Universal Categories (8.5" x 11"). Reference chart: Roots in various binyanim chart (11" x 17").

Some of my writing I’m putting online for longevity’s sake: You never told me.

Links about religion:

A few organizations I support:

Links about liberty: is a collection of old Amiga-era music “modules”, including the whole U4ia and F8 collection by Jim Young, mostly created on his Amiga.

End communication.