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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.
While the content of environment variables remains unchanged upon storage, their names (without the "%") are always converted to uppercase, with the exception of pre-environment variables defined via the CONFIG.SYS directive SET under DR DOS 6.0 and higher [11] [12] (and only with SWITCHES=/L (for "allow lowercase names") under DR-DOS 7.02 and ...
COMSPEC or ComSpec is one of the environment variables used in DOS, OS/2 and Windows, which normally points to the command line interpreter, which is by default COMMAND.COM in DOS, [1] Windows 95, 98, and ME or CMD.EXE in OS/2 and Windows NT. The variable name is written in all-uppercase under DOS and OS/2. Under Windows, which also supports ...
Pages in category "Windows environment variables" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes. A.
Microsoft Windows file shortcuts have the ability to store the working directory. COMMAND.COM in DR-DOS 7.02 and higher provides ECHOS, a variant of the ECHO command omitting the terminating linefeed. [4] [3] This can be used to create a temporary batchjob storing the working directory in an environment variable like CD for later use, for example:
Symbolic links may be implemented in a context-dependent or variable fashion, such that the link points to varying targets depending on a configuration parameter, run-time parameter, or other instantaneous condition. A variable or variant symbolic link is a symbolic link that has a variable name embedded in it. This allows some flexibility in ...
CONFIG.SYS is the primary configuration file for the DOS and OS/2 operating systems.It is a special ASCII text file that contains user-accessible setup or configuration directives evaluated by the operating system's DOS BIOS (typically residing in IBMBIO.COM or IO.SYS) during boot.
On DOS, OS/2, and Windows operating systems, the %PATH% variable is specified as a list of one or more directory names separated by semicolon (;) characters. [5]The Windows system directory (typically C:\WINDOWS\system32) is typically the first directory in the path, followed by many (but not all) of the directories for installed software packages.