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IF is a conditional statement, that allows branching of the program execution. It evaluates the specified condition, and only if it is true, then it executes the remainder of the command line. Otherwise, it skips the remainder of the line and continues with next command line. Used in Batch files. The command is available in MS-DOS versions 2 ...
A .bat file name extension identifies a file containing commands that are executed by the command interpreter COMMAND.COM line by line, as if it were a list of commands entered manually, with some extra batch-file-specific commands for basic programming functionality, including a GOTO command for changing flow of line execution.
Command-line interpreter (Shell): COMMAND.COM: This is the command interpreter. User configuration files: AUTOEXEC.BAT: This is run by the default shell (usually COMMAND.COM) to execute commands at startup. CONFIG.SYS: This contains statements to configure DOS and load device drivers. Standard DOS utility programs:
COMMAND.COM is the default command-line interpreter for MS-DOS, Windows 95, Windows 98 and Windows Me.In the case of DOS, it is the default user interface as well. [2] It has an additional role as the usual first program run after boot (init process), hence being responsible for setting up the system by running the AUTOEXEC.BAT configuration file, and being the ancestor of all processes.
The command is primarily used to manage network resources. [2] It is an external command implemented as net.exe. [3] When used in a batch file, the /Y or /N switches can be used to unconditionally answer Yes or No to questions returned by the command. [2]
CP/M commands should be put in a List of CP/M commands article. I'm mixed on the 86-DOS stuff even though DOS is of course based upon it. This is a List of MS-DOS commands so it should start with PC DOS 1.0 which was the first release of DOS and go up to MS-DOS 6.22 and PC DOS 2000 (a.k.a. PC DOS 7 revision 1).
The Call command allows subroutines within batch file. The Call command in COMMAND.COM only supports calling external batch files. File name parser extensions to the Set command are comparable with C shell. [further explanation needed] The Set command can perform expression evaluation. An expansion of the For command supports parsing files and ...
Most DOS/Windows commands will match files with no extension even when given a *.* pattern. /S (none) Selects matching files in subdirectories. By default, only the single, specified directory is searched. /C command Execute the given command for each matching file. The command string typically needs to be wrapped in double quotes.