[bwarp]

The only thing I do and would use there is "logger". The rest is about showboating.

A GUI and a script should never be entangled if you ask me. There should be no coupling there. Everything script-related should run quite happily non interactive.

A GUI could drive a script however via the script's API.

I think ESR wrote about this in TAOUP (The Art Of Unix Programming) but I can't be bothered to dig through it now for the reference.

[keeperofdakeys]

Personally I use notify-send for warnings (such as battery getting low). Even though I do have a separate battery bar, it helps remember to plugin.

[gbrindisi]

TAOUP?

[pewfly]

The Art Of Unix Programming