ACPIBUT(4)

🎀 NAME 🎀

acpibut — the ACPI Button driver, aka the little guy who hears you press the power button 💅 (this is acpibut(4) from the Kernel Interfaces Manual, section 4, bestie — very much kernel-adjacent, very much not a userland thing)

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✨ SYNOPSIS ✨

acpibut* at acpi?

Yeah that's the whole vibe. It attaches at acpi? and that's it. Iconic minimalism honestly 🫶

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💖 DESCRIPTION 💖

okay so the acpibut driver supports two kinds of ACPI buttons — just two, that's the whole squad:

• Power — runs /etc/powerd/scripts/power_button
• Sleep — runs /etc/powerd/scripts/sleep_button

so like, the mapping is literally: press a button → it has a script → that script is the script for that button. no cap 🔥

And here's the main character moment: when a button is pressed, the powerd(8) daemon — if it's running — will execute the corresponding script. That "if running" is doing so much work, please respect it 😭 no daemon, no script, that's just how it is.

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🌈 SEE ALSO 🌈

• acpi(4)
• powerd(8)

go read those too, iykyk 📚✨

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🦋 HISTORY 🦋

The acpibut driver appeared in NetBSD 1.6. a true elder, a legend, we stan a long-running driver 👑

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ngl this is one of the shortest manpages you'll ever read and honestly? she ate. concise queen 🍓

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and that's the whole page bestie — source/version vibes courtesy of Debian, dated April 25, 2010, so pour one out for a manpage that's been serving looks since before some of us could read 💀💜 bye!! 💅🎀