Section 4: special files
crontabs – configuration and scripts for running periodical jobs Synopsis run-parts [–list|–test]<directory> Description Crontabs is a historical name for the run-parts script and the system crontab. The run-parts script runs all executables in the specified directory. Run-parts runs all executables in the specified directory. The execution of files can be allowed or denied by creating…
cpuid – x86 CPUID access device Description CPUID provides an interface for querying information about the x86 CPU. This device is accessed by lseek(2) or pread(2) to the appropriate CPUID level and reading in chunks of 16 bytes. A larger read size means multiple reads of consecutive levels. The lower 32 bits of the file…
ioctl_console – ioctls for console terminal and virtual consoles Description The following Linux-specific ioctl(2) requests are supported for console terminals and virtual consoles. Each requires a third argument, assumed here to be argp. KDGETLED Get state of LEDs. argp points to a char. The lower three bits of *argp are set to the state of…
console_codes – Linux console escape and control sequences Description The Linux console implements a large subset of the VT102 and ECMA-48/ISO 6429/ANSI X3.64 terminal controls, plus certain private-mode sequences for changing the color palette, character-set mapping, and so on. In the tabular descriptions below, the second column gives ECMA-48 or DEC mnemonics (the latter if…
console – console terminal and virtual consoles Description A Linux system has up to 63 virtual consoles (character devices with major number 4 and minor number 1 to 63), usually called /dev/ttyn with 1 ≤ n ≤ 63. The current console is also addressed by /dev/console or /dev/tty0, the character device with major number 4…
cirrus – Cirrus Logic video driver Synopsis Section "Device" Identifier "devname" Driver "cirrus" … EndSection Description cirrus is an Xorg driver for Cirrus Logic video chips. THIS MAN PAGE NEEDS TO BE FILLED IN. Supported Hardware The cirrus driver supports… Configuration Details Please refer to xorg.conf(5) for general configuration details. This section only covers configuration…
cckd – Hercules Compressed CKD DASD image file Description Hercules DASD image file that emulates IBM mainframe DASD devices on a (usually) non-mainframe platform. Specified in the Hercules configuration file (default name hercules.cnf) to describe the DASD devices Hercules is to emulate. Also specified as input and/or output file to several Hercules utilities. Hercules compressed…
cciss – HP Smart Array block driver Synopsis modprobe cciss [ cciss_allow_hpsa=1 ] Description Note: This obsolete driver was removed from the kernel in version 4.14, as it is superseded by the hpsa(4) driver in newer kernels. cciss is a block driver for older HP Smart Array RAID controllers. Options cciss_allow_hpsa=1: This option prevents the…
AF_AX25 – AX.25 amateur packet radio protocol family Description AX.25 is a protocol used extensively by radio amateurs. The Linux AX.25 protocol family permits access to these protocols via the standard networking socket metaphor. The AX.25 protocol layer supports both connected mode and datagram (UI) frame modes. IP traffic may be stacked on top of…
atmsigd.conf – configuration file for the ATM signaling demon Synopsis /etc/atmsigd.conf Description atmsigd.conf contains configuration data for atmsigd. atmsigd reads atmsigd.conf after parsing the command line options, before connecting to the ATM network. Configuration parameters are arranged in functional groups. In order to set a parameter, the name of the group, the name of the…
atmsigd.conf – configuration file for the ATM signaling demon Synopsis /etc/atmsigd.conf Description atmsigd.conf contains configuration data for atmsigd. atmsigd reads atmsigd.conf after parsing the command line options, before connecting to the ATM network. Configuration parameters are arranged in functional groups. In order to set a parameter, the name of the group, the name of the…
ati – ATI video driver Synopsis Section "Device" Identifier "devname" Driver "ati" … EndSection Description ati is an Xorg wrapper driver for ATI video cards. It autodetects whether your hardware has a Radeon, Rage 128, or Mach64 or earlier class of chipset, and loads the radeon(4), r128(4), or mach64 driver as appropriate. Supported Hardware The…
atalk – AppleTalk protocol family Synopsis #include <sys/types.h> #include <netatalk/at.h> Description The AppleTalk protocol family is a collection of protocols layered above the Datagram Delivery Protocol (DDP), and using AppleTalk address format. The AppleTalk family may provide SOCK_STREAM (ADSP), SOCK_DGRAM (DDP), SOCK_RDM (ATP), and SOCK_SEQPACKET (ASP). Currently, only DDP is implemented in the kernel; ATP…
apm – Alliance ProMotion video driver Synopsis Section N’34’DeviceN’34’ Identifier N’34’devnameN’34’ Driver N’34’apmN’34’ … EndSection Description apm is an Xorg driver for Alliance ProMotion video cards. The driver is accelerated for supported hardware/depth combination. It supports framebuffer depths of 8, 15, 16, 24 and 32 bits. For 6420, 6422, AT24, AT3D and AT25, all depths…
amdgpu – AMD RADEON GPU video driver Synopsis Section "Device" Identifier "devname" Driver "amdgpu" … EndSection Description amdgpu is an Xorg driver for AMD RADEON-based video cards with the following features: • Support for 8-, 15-, 16-, 24- and 30-bit pixel depths; • RandR support up to version 1.4; • 3D acceleration; Supported Hardware The…
aiptek – Aiptek USB Digital Tablet Input Driver for Linux Synopsis Section N’34’InputDeviceN’34’ Identifier N’34’idevnameN’34’ Driver N’34’aiptekN’34’ Option N’34’DeviceN’34’ N’34’devpathN’34’ … EndSection Description aiptek is an Xorg input driver for Aiptek HyperPen USB-based tablet devices. This driver only supports the USB protocol, and only under Linux; for RS-232C-based HyperPens, please see the "hyperpen" driver. The…
acecad – Acecad Flair input driver Synopsis Section N’34’InputDeviceN’34’ Identifier N’34’idevnameN’34’ Driver N’34’acecadN’34’ Option N’34’DeviceN’34’ N’34’devpathN’34’ … EndSection Description acecad is an Xorg input driver for Acecad Flair devices… The acecad driver functions as a pointer input device, and may be used as the X server’s core pointer. THIS MAN PAGE NEEDS TO BE FILLED…