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Command-line argument parsing is the process of analyzing and handling command-line input provided to a program.
The Windows CE 3.0 net command. In computing, net is a command in IBM OS/2 (including eComStation and ArcaOS), Microsoft Windows, and ReactOS used to manage and configure the operating system from the command-line. It is also part of the IBM PC Network Program for DOS. [1]
PascalABC.NET An Object Pascal-based language implemented on the .NET Framework. PeachPie A compiler of PHP to .NET and .NET Core. Successor of Phalanger. PowerBuilder Can target CLI since version 11.1. PowerShell An object-oriented command-line shell. PowerShell can dynamically load .NET assemblies that were written in any CLI language.
A long-standing issue with command line programs was how to specify options; early programs used many ways of doing so, including single character options (-a), multiple options specified together (-abc is equivalent to -a -b -c), multicharacter options (-inum), options with arguments (-a arg, -inum 3, -a=arg), and different prefix characters (-a, +b, /c).
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.
COMMAND.COM, the original Microsoft command line processor introduced on MS-DOS as well as Windows 9x, in 32-bit versions of NT-based Windows via NTVDM; cmd.exe, successor of COMMAND.COM introduced on OS/2 and Windows NT systems, although COMMAND.COM is still available in virtual DOS machines on IA-32 versions of those operating systems also.
An MS-DOS command line, illustrating parsing into command and arguments. A command-line argument or parameter is an item of information provided to a program when it is started. [20] A program can have many command-line arguments that identify sources or destinations of information, or that alter the operation of the program.
Some commands are internal—built into COMMAND.COM; others are external commands stored on disk. When the user types a line of text at the operating system command prompt, COMMAND.COM will parse the line and attempt to match a command name to a built-in command or to the name of an executable program file or batch file on disk. If no match is ...