sys_class_net(5)

💖 sys_class_net(5) — bestie edition 💖

okay so we're in section 5 of the manual (the File Formats Manual, the lore section), and today's episode is all about that one directory in /sys that tells you about every network device on your system. pull up a chair, this one's short but it's lowkey iconic.

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✨ NAME ✨

/sys/class/net/ — networking devices 🦋

the little doorway where all your NICs and virtual interfaces live.

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🌸 SYNOPSIS 🌸

/sys/class/net/

yes bestie, that's the whole thing. it's a directory. she's just a directory. 💅

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💫 DESCRIPTION 💫

so every single entry inside this directory is a symbolic link ✨ and each one represents one of the real or virtual networking devices that are visible in the network namespace of the process that's doing the accessing. that namespace bit matters — what you see depends on who's looking, okay? it's giving main character energy and the main character is your network namespace.

and every one of those symlinks points off into /sys/devices/ — that's where the actual entries live. so /sys/class/net/ is basically the group chat and /sys/devices/ is where everyone's actual house is. 🏠

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📏 STANDARDS 📏

Linux. that's it. that's the standard. periodt. 🐧

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🎀 HISTORY 🎀

Linux 2.6.0 — she's been here since the ancient times and she's still serving. 👑

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👀 SEE ALSO 👀

• sys_class(5) — the parent vibe, go read her next 🫶

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and that's the whole page, no cap. this one comes to you from Linux man-pages 6.20, dated 2026-09-09 — tysm to everyone who keeps these pages updated, you're all doing the lord's work 💜✨