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What does the sys directory do in Linux?

Updated: 8/17/2019
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14y ago

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/sys has no officially designated function. Many distros use /sys as a virtual file system to export data from the kernel to userspace applications, such as when a new USB device is plugged in. However, this is completely optional, and is a fairly recent addition to the kernel.

In some older Unix systems, /sys was used to contain the kernel sources.

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14y ago
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Q: What does the sys directory do in Linux?
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