MASTERGUARD(8)

✨ masterguard — the MASTERGUARD(8) page, bestie edition ✨

okay so welcome to the manual page for masterguard, living in section 8 of the NUT Manual. it's giving "niche UPS driver energy" and honestly? we love that for it. let's get into it 💖

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🌸 NAME 🌸

masterguard — the driver for Masterguard UPS equipment. that's it, that's the whole job. she does one thing and she does it. periodt.

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🎀 SYNOPSIS 🎀

masterguard -h

masterguard -a UPS_NAME [OPTIONS]

so you can either yell for help or actually point her at a UPS by name. both valid. both iconic.

💀 little note tho: this man page only documents the hardware-specific features of the masterguard driver. for all the info about the core driver itself, go read nutupsdrv(8) — that's where the general stuff lives, bestie.

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⚠️ NOTE ⚠️

okay so real talk, no cap: this driver is deprecated and will not receive new development. 💀

if it works for managing your devices — fine, slay, keep vibing. but if you're running it to try setting up a new device, please please please consider the newer nutdrv_qx(8) instead. that one should handle all the Q* protocol variants for NUT, so it's the glow-up you actually want. 🦋

and also — if your device works with this driver but nutdrv_qx(8) would not actually support it with any subdriver, please do report that! that's genuinely useful info and we'd be so grateful 🫶

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🔥 SUPPORTED HARDWARE 🔥

this driver supports Masterguard UPS equipment. serial connection only, so don't come at her with your fancy USB cables, she's not about that life. 🎀

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💅 EXTRA ARGUMENTS 💅

• CS — cancels the shutdown procedure. like hitting undo on the whole "we're shutting down" situation. iconic of her honestly.

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👑 AUTHOR 👑

Michael Spanier <mail@michael-spanier.de> — the mastermind behind this one. we stan. 💜

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🌈 SEE ALSO 🌈

✨ Newer driver:

• nutdrv_qx(8) — the newer one, go look at her

💖 The core driver:

• nutupsdrv(8) — all the general driver goodness

🌐 Internet resources:

• The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.5/

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and that's the whole page bestie, you ate that 🍓 stay hydrated, check your UPS, and remember: deprecated doesn't mean unloved, it just means we've moved on to nutdrv_qx(8). mwah 💋

Network UPS Tools 2.8.5 — dated 10/07/2026, and that's the vibe check, we're done here 🦋✨