Sysfs is a virtual file system in Linux kernel 2.5+ that provides a tree of system devices. This package provides the program 'systool' to query it: it can list devices by bus, class, and topology.
In addition this package ships a configuration file /etc/sysfs.conf which allows to conveniently set sysfs attributes at system bootup (in the init script /etc/init.d/sysfsutils).
If you need sysfs queries in own programs, then you may want to use the libsysfs library directly (package libsysfs-dev).
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