Portrait photo of Jon Jensen

Jon C. Jensen

I live in Provo, Utah and work with Internet-related projects: web applications, databases, scalability, system administration, and security, and in the past, ecommerce and Android app development. I’m a radio amateur (“ham”) with call sign KG7TXN.

I sometimes write on Somusing, the blog of my wife, Erin, and wrote a lot on the End Point blog when I worked there.

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

My email address is jon@swelter.net — since 1999! You may encrypt messages to me using PGP/GnuPG with my current public keys (2019 ed25519 ECC key, 2012 4096-bit RSA key), which superseded my historical keys (1998 DSA key, 1994 RSA key).

A quotation

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“There’s a hardness I’m seeing in modern people. Those little moments of goofiness that used to make the day pass seem to have gone. Life’s so serious now. Maybe it’s just because I’m with an older gang now. … I mean, nobody even has hobbies these days. Not that I can see. Husbands and wives both work. Kids are farmed out to schools and video games. Nobody seems to be able to endure simply being by themselves, either—but at the same time they’re isolated. People work much more, only to go home and surf the Internet and send e-mail rather than calling or writing a note or visiting each other. They work, watch TV, and sleep. I see these things. The whole world is only about work: work work work get get get … racing ahead … getting sacked from work … going online … knowing computer languages … winning contracts. I mean, it’s just not what I would have imagined the world might be if you’d asked me seventeen years ago. People are frazzled and angry, desperate about money, and at best, indifferent to the future.”
        She grabs her breath. “So you ask me how do I feel? I feel lazy. And slow. And antique. And I’m scared of all these machines. I shouldn’t be, but I am. I’m not sure I completely like the new world.”
        Hamilton’s jaws clench and Karen sees this. “I know—you want me to say how great everything is now, but I can’t. It’s pretty clear to me that life now isn’t what it ought to have become.”
        * * *
        “I think I know what you mean,” Hamilton says. “If you look at the world as a whole, we have to admit life’s good here where we live. But in an evil Twilight Zone kind of way there’s nothing else to choose. In the old days there was always a bohemia or a creative underworld to join if the mainstream life wasn’t your bag—or a life of crime, or even religion. And now there’s only the system. All other options have evaporated. For most people it’s the System or what … death? There’s nothing. There’s no way out now.”

—Douglas Coupland, Girlfriend in a Coma (1998), pp. 154–155

Travel notes

A map of the route my son & I took on our 2019 trip to Armenia, Georgia, Ukraine, and Moldova: Jon and Seth itinerary in June 2019.

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.

Work talks

Presentation slides from talks I have given at technical conferences and company-wide meetings are available.

Free software

I support free software and open source. Don’t be a sharecropper!

I am on GitHub as jonjensen and have contributed to projects including PostgreSQL, Interchange, DevCamps, and Bucardo. I also keep old miscellaneous scripts around.

Other free software I work most often with: awesome, alacritty, kitty, tmux, Screen, zsh, bash, Firefox, Chromium, Vim, Git, Rust, Go, Perl, Python, Ruby, PHP, PostgreSQL, Linux (mostly Red Hat/CentOS, Fedora, Ubuntu, Debian), Android, OpenBSD, OpenSSH, Apache httpd, nginx, Postfix, Dovecot, Pine (now Alpine), Signal, GnuPG, Standard Notes, Zulip, MediaWiki, VLC, rsync, ripgrep, mtr, and Nmap, just as a sampling. Thanks to all free software developers for your time and efforts!

Once upon a time I created some RPM packages of free software for use on Fedora Linux. The source RPMs may still prove useful for building on a newer version.

Human languages

Some Unicode things I keep handy:

Language family maps for reference:

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″).

Writing

Some of my free verse:

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

Good causes

A few organizations I support:

Religion

Links about religion:

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!

Hymns:

Liberty

Miscellany

mod.zayda.net 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.