Linux - sysfs file system


sysfs is a new filesystem to the 2.6 kernels. It is managed by the kernel, and exports basic information about the devices currently plugged into your system.

udev can use this information to create device nodes corresponding to your hardware.

sysfs is mounted at /sys and is browseable.

The terms /sys and sysfs are often used interchangeably.

Documentation / Reference

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Linux - udev (rules file)

The original /dev directories were just populated with every device that might possibly appear in the system. /dev directories were typically very large because of this. udev manages the /dev directories,...

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