Section 4 of the manual describes special files (devices).
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- intel
- Intel integrated graphics chipsets
- intpm
- Intel PIIX4 Power Management controller driver
- intro
- introduction to special files
- intro
- introduction to devices and device drivers
- io
- I/O privilege file
- ip
- Internet Protocol
- ip6
- Internet Protocol version 6 (IPv6) network layer
- ipaccounting
- ipfw — IP packet filter and traffic accounting
- ipacct
- ipfw — IP packet filter and traffic accounting
- ipf
- packet filtering kernel interface
- ipfilter
- Introduction to IP packet filtering
- ipfirewall
- ipfw — IP packet filter and traffic accounting
- ipfw
- IP packet filter and traffic accounting
- ipheth
- USB Apple iPhone/iPad tethered Ethernet driver
- ipl
- IP packet log device
- ipmi
- OpenIPMI compatible IPMI interface driver
- ipnat
- Network Address Translation kernel interface
- ips
- IBM/Adaptec ServeRAID controller driver
- ipsec
- Internet Protocol Security protocol
- ipw
- Intel PRO/Wireless 2100 IEEE 802.11 driver
- ipwfw
- Firmware Module for Intel PRO/Wireless 2100 driver
- isci
- Intel C600 Serial Attached SCSI driver
- iscsi
- iSCSI initiator
- iscsi_initiator
- kernel driver for the iSCSI protocol
- iser
- iSCSI Extensions for RDMA (iSER) driver
- isl
- Intersil(TM) I2C ISL29018 sensor driver
- ismt
- Intel SMBus Message Transport (SMBus 2.0) driver
- isp
- Qlogic based SPI and FibreChannel SCSI Host Adapters
- ispfw
- Firmware for Qlogic based SPI and FibreChannel SCSI Host Adapters
- itwd
- device driver for ITE Super I/O chips watchdog timer
- iwi
- Intel PRO/Wireless 2200BG/2225BG/2915ABG IEEE 802.11 driver
- iwifw
- Firmware Module for Intel PRO/Wireless 2200BG/2225BG/2915ABG driver
- iwm
- Intel IEEE 802.11ac wireless network driver
- iwmfw
- Firmware Module for Intel Wireless driver
- iwn
- Intel IEEE 802.11n wireless network driver
- iwnfw
- Firmware Module for Intel Wireless driver
- ix
- ixgbe — Intel(R) 10Gb Ethernet driver for the FreeBSD operating system
- ixgbe
- Intel(R) 10Gb Ethernet driver for the FreeBSD operating system
- ixl
- Intel Ethernet 700 Series Driver
- jedec_dimm
- report asset information and temperatures for JEDEC DDR3 / DDR4 DIMMs
- jme
- JMicron Gigabit/Fast Ethernet driver
- joy
- joystick device driver
- joystick
- Joystick input driver
- kbd
- Keyboard input driver
- kbdmux
- keyboard multiplexer
- keyboard
- pc keyboard interface
- kld
- dynamic kernel linker facility
- kmem
- mem, kmem, port - system memory, kernel memory and system ports
- kmem
- mem , kmem — memory files
- ksyms
- kernel symbol table interface
- ksz8995ma
- driver for Micrel KSZ8995MA fast ethernet switch chip
- ktr
- kernel tracing facility
- kue
- Kawasaki LSI KL5KUSB101B USB Ethernet driver
- lagg
- link aggregation and link failover interface
- le
- AMD Am7900 LANCE and Am79C9xx ILACC/PCnet Ethernet interface driver
- led
- API for manipulating LED's, lamps and other annunciators
- lge
- Level 1 LXT1001 NetCellerator PCI Gigabit Ethernet adapter driver
- libinput
- libinput-based X.Org input driver
- linux
- Linux ABI support
- liquidio
- Cavium 10Gb/25Gb Ethernet driver for the FreeBSD operating system
- lirc
- lirc devices
- lm75
- lm75 i2c digital temperature sensor driver
- lo
- software loopback network interface
- longrun
- Transmeta(TM) Crusoe(TM) LongRun(TM) support
- loop-control
- loop, loop-control - loop devices
- loop
- loop, loop-control - loop devices
- loop
- lo — software loopback network interface
- lp
- line printer devices
- lp
- printer port Internet Protocol driver
- lpbb
- parallel port I2C bit-banging interface
- lpt
- generic printer device driver
- ltc430x
- driver for LTC4305 and LTC4306 I2C mux chips
- m-acr
- ACR/NEMA medical image format (MedCon)
- m-anlz
- Analyze (SPM) medical image format (MedCon)
- m-ecat
- CTI ECAT 6/7 medical image format (MedCon)
- m-gif
- GIF87a and annimated GIF89a format (MedCon)
- m-intf
- InterFile 3.3 medical image format (MedCon)
- m-inw
- RUG INW1.0 medical image format (MedCon)
- mac
- Mandatory Access Control
- mac_biba
- Biba data integrity policy
- mac_bsdextended
- file system firewall policy
- mac_ifoff
- interface silencing policy
- mac_lomac
- Low-watermark Mandatory Access Control data integrity policy
- mac_mls
- Multi-Level Security confidentiality policy
- mac_none
- null MAC policy module
- mac_ntpd
- policy allowing ntpd to run as non-root user
- mac_partition
- process partition policy
- mac_portacl
- network port access control policy
- mac_seeotheruids
- simple policy controlling whether users see other users
- mac_stub
- MAC policy stub module
- mac_test
- MAC framework testing policy
- malo
- Marvell Libertas IEEE 802.11b/g wireless network driver
- mce
- mlx5en — Mellanox ConnectX-4, ConnectX-4 LX and ConnectX-5 based 100Gb, 50Gb, 40Gb, 25Gb and 10Gb Ethernet adapter driver
- md
- Multiple Device driver aka Linux Software RAID
- md
- memory disk
- mdio
- IEEE 802.3 Management Data Input/Output interface
- me
- encapsulating network device
- mem
- mem, kmem, port - system memory, kernel memory and system ports
- mem
- mem , kmem — memory files
- meteor
- video capture driver interface