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| A device manager is a program that manages [https://en.wikipedia.org/wiki/Device_node device nodes] in the [https://en.wikipedia.org/wiki/Devfs /dev] directory. It is responsible for things like hot-plugging devices such as usb-sticks.
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| Alpine linux has several device managers available:
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| * '''[[mdev]]''' (from {{pkg|busybox}}) is the default.
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| * '''[[mdevd]]''' is standalone, compatible with mdev, more efficient.
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| * '''[[eudev]]''' is the complex, full-featured one.
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| == Do I need a device manager? ==
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| {{draft|this needs to be tested on actual hardware}}
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| A device manager is strongly recommended unless you know what you are doing. It is needed if the devices (like disk or keyboard) change after the system is booted. If this is not needed at all you might consider removing the device manager.
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| Device files can also be manually added using <code>mknod</code>. See <code>[https://man.archlinux.org/man/mknod.1 man 1 mknod]</code> and <code>[https://man.archlinux.org/man/partprobe.8 man 8 partprobe]</code> and [[Alpine_Linux_in_a_chroot#Method_1.b_Manual_way:_Creating_needed_nodes|manually create nodes]].
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| == See Also ==
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| * [[Mdev#libudev_replacement|libudev replacement]]
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| * [https://wiki.gentoo.org/wiki/Device_file Gentoo Wiki - Device file]
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