sysfs(5) File Formats Manual sysfs(5) sysfs - sysfs -- , (, sysfs kobject, ). sysfs , , . , sysfs /sys. , : mount -t sysfs sysfs /sys sysfs , , . . /sys. /sys/block , . /sys/devices. /sys/bus . : devices /sys/devices, , . drivers , . /sys/class , (, , , , , . .). . /sys/devices. /sys/class/net , , . /sys/devices. /sys/dev -- block/ char/, . -ID:-ID, ID . sysfs . , /sys/dev sysfs , stat(2) ( ). /sys/dev: $ stat -c "%t %T" /dev/null; 1 3 $ readlink /sys/dev/char/1\:3; ../../devices/virtual/mem/null $ ls -Fd /sys/devices/virtual/mem/null; /sys/devices/virtual/mem/null/ $ ls -d1 /sys/devices/virtual/mem/null/*; /sys/devices/virtual/mem/null/dev /sys/devices/virtual/mem/null/power/ /sys/devices/virtual/mem/null/subsystem@ /sys/devices/virtual/mem/null/uevent /sys/devices , device . /sys/firmware . /sys/fs . , . /sys/fs/cgroup , tmpfs(5), cgroups(7). /sys/fs/smackfs SMACK LSM. Documentation/admin-guide/LSM/Smack.rst. /sys/hypervisor [ ] /sys/kernel , . /sys/kernel/cgroup/ cgroups(7). /sys/kernel/debug/tracing Mount point for the tracefs filesystem used by the kernel's ftrace facility. (For information on ftrace, see the kernel source file Documentation/trace/ftrace.rst.) /sys/kernel/mm , . /sys/kernel/mm/hugepages , . (, hugepages-2048kB). , ( ) , . Documentation/admin-guide/mm/hugetlbpage.rst. /sys/module , . . : coresize [ ] initsize [ ] initstate [ ] refcnt [ ] srcversion [ ] taint [ ] uevent [ ] version [ ] : drivers [ ] holders [ ] notes [ ] parameters This directory contains one file for each module parameter, with each file containing the value of the corresponding parameter. Some of these files are writable, allowing the parameters to be changed. sections . , , . [ ] /sys/power [ ] Linux. Linux 2.6.0. , , . proc(5), udev(7) P. Mochel (2005). The sysfs filesystem. Proceedings of the 2005 Ottawa Linux Symposium. The kernel source file Documentation/filesystems/sysfs.rst and various other files in Documentation/ABI and Documentation/*/sysfs.rst. () Alexander Golubev , Azamat Hackimov , Hotellook, Nikita , Spiros Georgaras , Vladislav , Yuri Kozlov ; GNU (GNU General Public License - GPL, 3 ) , - . - , , () () () . Linux man-pages 6.18 8 2026 . sysfs(5)