LIEBERT(8)

💖 LIEBERT(8) 💖

okay bestie, so this is liebert — the NUT Manual page for the Liebert contact-closure UPS driver, and honestly? it's giving niche but iconic 🎀

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✨ NAME ✨

liebert — the driver for Liebert contact-closure UPS equipment 🦋

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✨ SYNOPSIS ✨

liebert -h

liebert -a UPS_NAME [OPTIONS]

heads up, bestie: this man page only documents the hardware-specific features of the liebert driver. for all the core driver tea, go read nutupsdrv(8) 🫶

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✨ SUPPORTED HARDWARE ✨

so this driver works with some Liebert UPS equipment that has a contact-closure interface. that includes the UPStation GXT2 with its contact-closure cable 🌈

⚠️ the smart mode ("Multilink") cable is NOT supported by this driver. not it. don't even try 💀

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✨ EXTRA ARGUMENTS ✨

ngl this driver does not support any extra settings in ups.conf(5). that's it, that's the whole section 🙈

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✨ BUGS ✨

okay so, the ✨known issues✨, and we're being so fr fr about these:

• this driver does not yet support shutdowns by raising DTR. and lowkey you need to know that shutdowns are not possible with the stock contact-closure cable 😭 you may have to build another cable with DTR connected through to the UPS for it to work. diy era, i guess 💅
• there is no way for this driver to detect the hardware or the cable. it will start up successfully even if no UPS is present. this is a fundamental limitation of any contact-closure driver — not a skill issue, just physics 🧚

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✨ SEE ALSO ✨

The core driver:

• nutupsdrv(8) 👑

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 💖 this was Network UPS Tools 2.8.5, dated 10/07/2026 — slay, go forth, and may your UPS never actually need that DTR cable 🎀✨👑