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Storage device command data structure
In SCSI, the command descriptor block (CDB) is a structure used for sending commands between computers and peripheral devices. This is often particularly
Command_descriptor_block
System resource identifier in operating systems
file descriptor, depending on the command argument passed to it. There are commands to get and set attributes associated with a file descriptor, including
File_descriptor
Set of computer and peripheral connection standards
target. The initiator sends a command to the target, which then responds. SCSI commands are sent in a command descriptor block (CDB). The CDB consists of
SCSI
Way to identify a logical unit in computer storage
a LUN: In the early versions of SCSI, an initiator delivers a command descriptor block (CDB) to a target (physical unit) and within the CDB is a 3-bit
Logical_unit_number
Type of SCSI error code
returns a check condition in response to a command, the initiator usually then issues a SCSI Request Sense command. This process is part of a SCSI protocol
Key_Code_Qualifier
Family of network operating systems by Cisco
which performs the actual packet forwarding function. An Interface Descriptor Block, or simply IDB, is a portion of memory or Cisco IOS internal data structure
Cisco_IOS
Journaling file system for Linux
unset. Each block group is represented by its block group descriptor. It has vital information for the block group like free inodes, free blocks and the location
Ext4
GNU support for multiple executable file formats
The Binary File Descriptor library (BFD) is the GNU Project's main mechanism for the portable manipulation of object files in a variety of formats. As
Binary File Descriptor library
Binary_File_Descriptor_library
Original SCSI storage interface
parity bit error checking. Starting with SCSI-U160 (part of SCSI-3) all commands and data are error checked by a cyclic redundancy check. The first two
Parallel_SCSI
Interface to device driver that appears in filesystem
compatible with "special files" handling of PIP command in CP/M. There were two kinds of devices in DOS: Block Devices (used for disk drives) and Character
Device_file
DBASE database file format family
The maximum number of fields is 255. n means the last byte in the field descriptor array. The array's size depends on the number of fields used in a database
.dbf
File system for CD-R and CD-ROM optical discs
and reserved for other uses. The rest begins with a volume descriptor set (a header block which describes the subsequent layout) and then the path tables
ISO_9660
Computer disk partitioning standard for legacy Macintosh computers
blocks, with 512 bytes usually belonging to each block. The first block, Block 0, contains an Apple-specific data structure called "Driver Descriptor
Apple_Partition_Map
Range of mainframe computers in the 1960s and 70s
of the syllables in the architecture. Partially data-driven tagged and descriptor-based design Few programmer accessible registers Stack machine where all
Burroughs_Large_Systems
specify a CommandValidationHandler ScriptBlock which runs before submitting the command. This allows for custom correcting of commonly mistyped commands, and
Comparison_of_command_shells
Software loop that processes events
resource polled is the collection of file descriptors the application is interested in; the polling block will be interrupted if a signal arrives or
Event_loop
General-purpose programming language
from outside its block PAUSE statement ASSIGN and assigned GO TO statement, and assigned format specifiers H Hollerith edit descriptor. An important supplement
Fortran
GNU replacement for the Bourne shell
Bash (short for "Bourne Again SHell") is an interactive command interpreter and command language developed for Unix-like operating systems. Supported
Bash_(Unix_shell)
Page description language
is used, many scaling commands are unavailable. When a TrueType font is used, variable length descriptors and continuation blocks are not supported. Outline
Printer_Command_Language
Set of rules defining correctly structured programs
implementation to use a private instance variable exposed through a property descriptor, code internal to the class may need to be adjusted to use the private
Ruby_syntax
High-performance input/output architecture
e., just past the track descriptor record (R0)) and then treat the Read IPL command as if it were a Read Data (X'06') command. Without this special DASD
Channel_I/O
Software that manages computer hardware resources
process has an authentication token and each object is given a security descriptor. Later releases have added even more security features. Comparison of
Operating_system
Unix system call for querying file metadata
returns attributes of the link itself. The fstat() function accepts a file descriptor argument instead of a path, and returns attributes of the file that it
Stat_(system_call)
Operational mode of x86-compatible CPUs
Protected mode may only be entered after the system software sets up one descriptor table and enables the Protection Enable (PE) bit in the control register
Protected_mode
Command-line interpreter for operating systems
restructuring may be necessary Command substitution using backquotes: `command`. Here documents using << to embed a block of input text within a script
Bourne_shell
Reusable superheavy-lift general-purpose launch vehicle
as the rocket was to transport humans to Mars and back. In 2016, the descriptor was changed to Interplanetary Transport System, as the rocket was planned
SpaceX_Starship
Generative AI chatbot by OpenAI
limitations may be revealed when ChatGPT responds to prompts including descriptors of people. In one instance, ChatGPT generated a rap in which women and
ChatGPT
Computer device communications standard
the SCSI Primary Commands, and the SCSI Block Commands standards. The standard allows for translation of SCSI read and write commands. The standard also
SCSI_/_ATA_Translation
Windows 10) SMB encryption (CCM, GCM) SMB direct(RDMA) WinACL (Security descriptor) Kerberos Directory lease Multi-channel Durable handle and v2 Persistent
KSMBD
Software-based endpoint of network communications
unique integer value called a socket descriptor. On Unix-like operating systems and Microsoft Windows, the command-line tools netstat or ss are used to
Network_socket
Range of HiFi components by Sony
AV/C Disc Media Type Specification - CD-DA AV/C Descriptor Mechanism Specification AV/C Information Block Types Specification These devices can be controlled
Sony_Lissa
Form of inter-process communication in computer systems
explicitly watched file descriptor. Using it effectively leads to making asynchronous I/O requests since the kernel will poll the descriptor in place of the caller
Signal_(IPC)
Section of a source code file that is treated as if it were a separate file
including newlines, in strings. A string then can be turned into a file descriptor using the textConnection() function. For example, the following turns
Here_document
Diagnostic, debugging and instructional userspace utility for Linux
files, and descriptors (--secontext option; since strace 5.12). strace supports decoding of arguments of some classes of ioctl commands, such as BTRFS_*
Strace
Software graphics library
restored and built by default again. A TIFF file is composed of small descriptor blocks containing offsets into the file which point to a variety of data
LibTIFF
in Amstrad BASIC. For strings, the descriptor is three bytes in the variable table, made up of a length descriptor and a further (little-endian) address
Locomotive_BASIC
Symbol representing the word "and" (&)
to duplicate file descriptors. In Bash, the ampersand can separate words, control the command history, duplicate file descriptors, perform logical operations
Ampersand
Command-line utility
test is a command-line utility found in Unix, Plan 9, and Unix-like operating systems that evaluates conditional expressions. test was turned into a shell
Test_(Unix)
Programming tool for profiling, memory debugging and memory leak detection
errors affecting file descriptors. The kinds of errors that are detected are closing a file descriptor that is not open file descriptors that are not closed
Valgrind
Human-readable data serialization language
document schema descriptors that allow, for example, a document to self-validate. However, there are several externally defined schema descriptor languages
YAML
Analysis tool in Unix-like systems
platform's procfs. Such systems use ioctls on the file descriptor of the opened /proc file to issue commands to the controlled process. FreeBSD, on the other
Ptrace
Filesystem in Unix-like operating systems
open file descriptor. /proc/PID/fdinfo, a directory containing entries which describe the position and flags for each open file descriptor. /proc/PID/maps
Procfs
Unix shell
file descriptors as files may use the following workaround. ( ( ( echo ok ; '' ) > /dev/fd/0 ) >& /dev/null < /dev/fd/1 ) | ( echo "$<" bye ) Commands can
C_shell
Message-based interprocess communication mechanism in Mac OS
dynamically-typed, extensible descriptor format called an AEDesc, which is just an OSType code specifying the data type, together with a block of type-dependent data
Apple_event
resource block @ FI END Features to note here include: The declaration of the procedure is decorated with annotations that define a command line syntax
S3_(programming_language)
Set of rules defining correctly structured programs
value), __delete__(self, instance) can be used as a descriptor. Creating an instance of a descriptor as a class member of a second class makes the instance
Python_syntax_and_semantics
Operating system
a command for seeking in RELative type files (RECORD#), several block-level direct-access commands (BLOCK-READ, BLOCK-WRITE, BUFFER-POINTER), block management
Commodore_DOS
Wireless personal area network technology
Find characteristics matching a given UUID Read all descriptors for a particular characteristic Commands are also provided to read (data transfer from server
Bluetooth_Low_Energy
Open-source password management software
allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "—status-fd 2" option. For example, the
KWallet
Aspect of Unisys 2200 Series
addressing and protection scheme. Every thread has eight Bank Descriptor Tables (Segment Descriptor Tables in the industry) based on B16-B23. The tables are
Unisys 2200 Series system architecture
Unisys_2200_Series_system_architecture
Computer mechanism
downgrades can block, which may be counter-intuitive. All fcntl locks associated with a file for a given process are removed when any file descriptor for that
File_locking
Direct access storage device data recording format
matched to the application data block sizes CPU and memory requirements can be reduced by exploiting search-key commands. IBM CKD subsystems initially operated
Count_key_data
File system used by MS-DOS and Windows 9x
cases, a test for a valid media descriptor at offset 0x015 would fail (value 0x00 instead of valid media descriptors 0xF0 and higher). If these tests
File_Allocation_Table
software such as fail2ban. Managing complex rulesets via high-level service descriptors streamlines deployment across large server deployments. Instead of forcing
Firewalld
Mechanism for inter-process communication using message passing
file descriptors in the process: the read-only end of the pipe, and the write-only end. The pipe ends appear to be normal, anonymous file descriptors, except
Pipeline_(Unix)
Programming language
with a list of external file descriptors as parameters (not required in Turbo Pascal etc.); then follows the main block bracketed by the begin and end
Pascal_(programming_language)
Computer operating system
support a BPB, but this entry for the FAT ID corresponds with the media descriptor byte at BPB offset 0x0A under DOS 2.0 and higher. Paterson, Tim (2018-08-05)
86-DOS
Source-level debugger
variable $argc representing the number of command line arguments. Additionally gdb includes if/else and while blocks terminated by end statements as well as
GNU_Debugger
Type of computer file existing on IBM mainframe operating systems
variable-length record. V records when stored on media are prefixed by a Record Descriptor Word (RDW) containing the integer length of the record in bytes and flag
Data_set_(IBM_mainframe)
Data structure in a Unix file system
such as a file or a directory. Each inode stores the attributes and disk block locations of the object's data. File-system object attributes may include
Inode
64-bit extension of x86 architecture
started in PAE mode. Instead of FS segment descriptor on x86 versions of the Windows NT family, GS segment descriptor is used to point to two operating system
X86-64
Interactive programming language
moment. JOSS so emphasized user-friendliness that "JOSS-like" became a descriptor of a new user interacting with a time-sharing system. Children and others
JOSS
Low-quality AI-generated digital content
pollution", and "AI-generated dross". Early uses of the term "slop" as a descriptor for low-grade AI material apparently came in reaction to the release of
AI_slop
Chain of software processing elements
it makes for complicated syntax and blocking modes, although some shells do support it via arbitrary file descriptor assignment). Traditional application
Pipeline_(software)
1992 fighting game
Software Rating Board (ESRB), a U.S. government-backed organization that set descriptor ratings for video games. Mortal Kombat is a fighting game in which players
Mortal Kombat (1992 video game)
Mortal_Kombat_(1992_video_game)
System configuration file for DOS and OS/2
DDSCS (EDR-DOS 7.01.07 only) Configures the relocation of the drive descriptor tables. DEBLOCK (DR‑DOS 6.0 (1993 update) and higher only) Specifies the
CONFIG.SYS
DB — embedded database software library for key/value data Binary File Descriptor library — binary file manipulation library in the GNU toolchain Boehm
List_of_C_software_and_tools
Rules defining correctly structured Java programs
nets for reclaiming non-memory resources, such as native pointers, file descriptors, or sockets. All the statements in Java must reside within methods. Methods
Java_syntax
1860s American term
States of America. The term is commonly used in historical studies as a descriptor of Reconstruction era Southern white Republicans, although some historians
Scalawag
Instruction for x86 microprocessors
or TLB per descriptor, but some descriptor-values provide other information as well — in particular, 00h is used for an empty descriptor, FFh indicates
CPUID
Subsystem of the Linux kernel
file descriptor. For the development of PRIME two new ioctls were added to the DRM API, one to convert a local GEM handle to a DMA-BUF file descriptor and
Direct_Rendering_Manager
Algorithm that estimates unknowns from a series of measurements over time
J.Y.; Terra, M.H.; Campos, J.C.T. (2006). "Robust Kalman Filter for Descriptor Systems". IEEE Transactions on Automatic Control. 51 (8): 1354. Bibcode:2006ITAC
Kalman_filter
BEEP—Blocks Extensible Exchange Protocol BER—Basic Encoding Rules BER—Bit Error Rate BFD—Bidirectional Forwarding Detection BFD—Binary File Descriptor BFS—Breadth-First
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
Technology developed by Apple Inc
the client to register blocks or functions to execute asynchronously upon system events, such as a socket or file descriptor being ready for reading
Grand_Central_Dispatch
Personality model consisting of five broad dimensions
Raymond Cattell built upon earlier lexical work by reducing thousands of descriptors to 16 personality factors, later clustered into five global traits, which
Big_Five_personality_traits
Brevity code for NATO communications
[Direction] Perform an in-place, 180-degree turn.[A/A] 2. [Track # or descriptor] Data link directive call to cue sensors to described point (e.g., point
Multi-service tactical brevity code
Multi-service_tactical_brevity_code
Framework
request to know which DRM device to use— returns an already open file descriptor to the device node instead of the device node filename, with any required
Direct Rendering Infrastructure
Direct_Rendering_Infrastructure
Vendor-neutral file system, used in practice for DVDs and other optical discs
file system for DVD-Video and DVD-Audio. UDF shares the basic volume descriptor format with ISO 9660. A "UDF Bridge" format is defined since 1.50 so that
Universal_Disk_Format
Computer key
causing the tty's output queue to become full if the tty file descriptor is not using non-blocking I/O. When Scroll Lock is pressed again, the screen is unfrozen
Scroll_Lock
Type of long gun appearing in 15th-century Europe
decline of armor. The term, however, remained and musket became a generic descriptor for smoothbore gunpowder weapons fired from the shoulder ("shoulder arms")
Arquebus
Command line shell and text editor
CANDE (Command AND Edit) is a command line shell and text editor on the MCP (Master Control Program) operating system which runs on the Unisys Clearpath
CANDE
System call for device-specific input/output operations
request code argument. An ioctl call takes as parameters: an open file descriptor a request code number an untyped pointer to data (either going to the
Ioctl
Cross-platform 3D graphics API and open standard
and memory operations in different threads", and "descriptor indexing to enable reuse of descriptor layouts by multiple shaders". The additional features
Vulkan
Unix command to commit all data in the kernel filesystem to non-volatile storage buffers
call fsync() commits just the buffered data relating to a specified file descriptor. fdatasync() is also available to write out just the changes made to the
Sync_(Unix)
Positive psychological and social functioning
time," living "within an optimal range of human functioning." It is a descriptor and measure of positive mental health and overall life well-being, and
Flourishing
overbearing, and forceful. The term originated in the early 20th century as a descriptor independent of gender, but became primarily applied to just women around
List_of_stock_characters
Shell command and system call that changes the apparent root directory
Live CD). Privilege separation Programs are allowed to carry open file descriptors (for files, pipelines and network connections) into the chroot, which
Chroot
2003 computer malware
security-related processes and block access to security-related websites, and may also disable any system service descriptor table (SSDT) hooks to prevent
Sality
Low level firmware interface to the hardware
compatibility problems of BIOS and protected mode. DOS interrupt call Interrupt descriptor table Ralf Brown's Interrupt List INT 10H INT 13H INT 16H Not all computers
BIOS_interrupt_call
Aspect of the instruction set architecture of CPUs
Instructions existed to load and store bytes via this descriptor, and to increment the descriptor to point at the next byte (bytes were not split across
Addressing_mode
Resource allocation system based on a computational procedure
mechanism was a system of command-and-control. The term administrative-command economy gained currency as a more accurate descriptor of Soviet-type economies
Economic_planning
List of x86 microprocessor instructions
documented to write a descriptor to memory with the last byte being set to 0. However, observed behavior is that bits 31:24 of the descriptor table address are
List_of_x86_instructions
Technology research and development agency of the U.S. Department of Defense
full-scale integrated vehicles. By May 2024, Manta Ray was not only the descriptor for the DARPA R&D program, but was also the name of a specific prototype
DARPA
Markup language for documents
including IDs, names, URIs, numbers, units of length, languages, media descriptors, colors, character encodings, dates and times, and so on. All of these
HTML
General-purpose programming language
implementation to use a private instance variable exposed through a property descriptor, code internal to the class may need to be adjusted to use the private
Ruby_(programming_language)
API for Java
ResultSets often tie up operating system resources such as sockets or file descriptors. In the case of java.sql.Connections to remote database servers, further
Java_Database_Connectivity
Proprietary file system developed by Microsoft
secure user data. In NTFS, each file or folder is assigned a security descriptor that defines its owner and contains two access control lists (ACLs). The
NTFS
Video game distribution platform
added a "Curator Connect" program in December 2017. Curators can set up descriptors for the type of games they are interested in, preferred languages, and
Steam_(service)
High-speed interface technology
Specification for Device Descriptor Block (DDB), Version 1.0 To date, several vendors have announced the availability of UniPro IP blocks and various chip suppliers
UniPro
Novelty form of variant English spelling
be installed, initially with extremely limited GPU access. Leet file (command) "Multiboot mailing list archive". "Multiboot specifications". "Macintosh
Hexspeak
travel, tourism, insurance
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travel, tourism, insurance