Search results
Results From The WOW.Com Content Network
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.
Another important use of the echo command is to toggle echoing of commands on and off in batch files. Traditionally batch files begin with the @echo off statement. This says to the interpreter that echoing of commands should be off during the whole execution of the batch file, thus resulting in a "tidier" output (the @ symbol declares that this ...
The batch file below gives the user three choices. [13] The user is directed depending upon his input by evaluating the exit code using the IF ERRORLEVEL command (which tests on "greater or equal"). The selected choice is then printed to the screen using the ECHO command.
A high-level program (executing multiple programs, with some additional "glue" logic) is today most often called a script, and written in scripting languages, particularly shell scripts for system tasks; in IBM PC DOS and MS-DOS this is instead known as a batch file.
AUTOEXEC.BAT is a system file that was originally on DOS-type operating systems.It is a plain-text batch file in the root directory of the boot device.The name of the file is an abbreviation of "automatic execution", which describes its function in automatically executing commands on system startup; the filename was coined in response to the 8.3 filename limitations of the FAT file system family.
The DOS kernel provides various functions for programs (an application program interface), like character I/O, file management, memory management, program loading and termination. DOS provides the ability for shell scripting via batch files (with the filename extension.BAT). Each line of a batch file is interpreted as a program to run.
BTM batch files (cached to memory for speed), extended memory (XMS) swapping, variable functions, bracket variable-name syntax. 4.00 1991-11-01 Colored directory listings, 4DOS.INI configuration file, include lists, command groups, implied CDD, DOS 5 Upper Memory Blocks (UMB) support. 5.00 1993-11-23 Date, time, and size ranges; compressed ...
The domain was also expanded from only program names on the Berkeley system to both program names and files on Tenex. [1] The Tenex descendant TOPS-20 moved command line completion from command interpreter to the operating system via the COMND JSYS system call, to make it available to other user applications. [2] From there it was borrowed by Unix.