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The CHOICE command is used in batch files to prompt the user to select one item from a set of single-character choices. Choice was introduced as an external command with MS-DOS 6.0; [ 1 ] [ 2 ] Novell DOS 7 [ 3 ] and PC DOS 7.0.
Generally these systems operated together with a simple command processor that allowed users to type in English-like commands, and receive output. The best-known examples are SQL from IBM and QUEL from the Ingres project. These systems may or may not allow other applications to access the data directly, and those that did use a wide variety of ...
A command prompt (or just prompt) is a sequence of (one or more) characters used in a command-line interface to indicate readiness to accept commands. It literally prompts the user to take action. A prompt usually ends with one of the characters $ , % , # , [ 15 ] [ 16 ] : , > or - [ 17 ] and often includes other information, such as the path ...
In computer programming, a usage message or help message is a brief message displayed by a program that utilizes a command-line interface for execution. This message usually consists of the correct command line usage for the program and includes a list of the correct command-line arguments or options acceptable to said program.
In Unix and Unix-like operating systems, write is a utility used to send messages to another user by writing a message directly to another user's TTY. [ 1 ] History
In Windows PowerShell, type is a predefined command alias for the Get-Content Cmdlet which basically serves the same purpose. TYPE originated as an internal command in 86-DOS. The command-syntax and feature set between operating systems and command shell implementations can differ as can be seen in the following examples.
Under OS/2 and Windows NT, the .CMD file extension is associated with batch scripts for their command processor CMD.EXE.Since binary code will not be executed this way, attempting to run CP/M-86 CMD files under the CMD command processor will not work, but typically only cause mild inconvenience to users.
LMDB: copy-on-write memory-mapped B+ tree implementation in C with a Berkeley-style API. The following databases are dbm-inspired, but they do not directly provide a dbm interface, even though it would be trivial to wrap one: cdb ("constant database"), database by Daniel J. Bernstein, database files can only be created and read, but never be ...