[jasomill]

Write a program using

https://www.sqlite.org/c3ref/update_hook.html

On a PDP-11, run this program via telnet, rsh, or rexec.

If you're more ambitious, porting SQLite to 2.11BSD would be a fun exercise.

[themk]

Update hook doesn't trigger if the write happened from a different process.

[mhio]

Interesting, that's a requirement for an out of band tailing tool.

Maybe a user defined function bound to an INSERT trigger. But I believe that functions are also connection specific which is fine for the tail tool, but what happens when the user defined function connection goes away.

[mhio]

Nope. Triggers and user defined functions don't help across processes either.