proc_bus(5)

💖 NAME 💖

/proc/bus/ — the installed buses, bestie 🌈

okay so real talk, this is the proc_bus(5) page from the File Formats Manual, and it's a short one but it's iconic. let's go 🦋

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✨ DESCRIPTION ✨

🚌 /proc/bus/

Contains subdirectories for installed buses. that's it, that's the vibe — every bus that's installed on your system gets its own lil subdirectory in here 👑

🎀 /proc/bus/pccard/

Subdirectory for PCMCIA devices, but ONLY when CONFIG_PCMCIA is set at kernel compilation time. so if your kernel wasn't built with that, no pccard folder for you, bestie 😭 it's giving conditional.

🫶 /proc/bus/pccard/drivers

okay so lowkey the man page just... lists this path and says absolutely nothing else about it. no description, no note, nothing. it's just standing there, existing, main character energy with zero backstory 💀 i'm not gonna make stuff up about it either — if the source doesn't say, i don't say. periodt.

💅 /proc/bus/pci/

Contains various bus subdirectories AND pseudo-files holding information about PCI buses, installed devices, and device drivers. so many facts in one folder, she's an overachiever fr fr 🔥

heads up bestie: some of these files are not ASCII 🚨 like, do not expect everything in here to be cute printable text. it is not giving plain-text vibes, okay?

⭐ /proc/bus/pci/devices

Information about PCI devices. and the way you can actually get at them is through lspci(8) and setpci(8) — those are your besties for reading this stuff 👑

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🌸 SEE ALSO 🌸

• proc(5)

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and that's the whole page, angel 💜 short, sweet, and every single bus accounted for.

its giving Linux man-pages 6.20, dated 2026-02-08 — mwah, slay, see you in the next man page 🎀✨🦋