Small hack. Do you have a `bash`[^1] script that runs via `cron` or `incron` or
any other daemon, and you wanna debug it by at least tracing its execution? Well,
simply surround it by:

    (

    set -x

    ...

    ) > /tmp/$0-$(date +%F.%T).log

But! Do not make the same mistake I did and forget to redirect `stderr` too[^2]!:

    ) > /tmp/$0-$(date +%F.%T).log 2>&1

I know there is a shortcut for that, but I'm too lazy to look it up.

[^1]: I'm not sure this works in `sh`.

[^2]: Othewise the trace does not appear in the log, because it's output to `stderr`.