List of Macro Strings in Windows Command Processor
The Windows Command Processor, also known as cmd.exe, supports the use of macro strings, which are variables that can be used to expand to a specific value. In this article, we will cover some of the most commonly used macro strings in the Windows Command Processor.
Environment Variables
One of the most useful types of macro strings in the Windows Command Processor are environment variables. Environment variables are values that are set by the operating system or by the user, and they can be used to configure the behavior of various applications and system components. In the Windows Command Processor, you can access environment variables using the %variable% syntax, where "variable" is the name of the environment variable. For example, the %ProgramFiles% environment variable expands to the path of the Program Files directory on your system.
Here is a list of some commonly used environment variables in the Windows Command Processor:
- %SystemRoot% - the path to the Windows system directory
- %ProgramFiles% - the path to the Program Files directory
- %ProgramFiles(x86)% - the path to the Program Files (x86) directory
- %SystemDrive% - the drive letter of the system drive
- %TEMP% - the path to the temporary files directory
- %Path% - a list of directories that the system searches for executable files
Other Macro Strings
In addition to environment variables, the Windows Command Processor also supports a few other types of macro strings. Here are some examples:
- %DATE% - the current date, in the format "dd-mm-yyyy"
- %TIME% - the current time, in the format "hh:mm:ss"
- %CD% - the current directory
- %RANDOM% - a random number between 0 and 32767
Using Macro Strings in the Windows Command Processor
To use a macro string in the Windows Command Processor, simply include it in a command or batch file as you would any other text. For example, the following command sets the current directory to the Program Files directory:
cd %ProgramFiles%Or, you can use the %DATE% and %TIME% macro strings to insert the current date and time into a file:
echo The current date and time is %DATE% %TIME% > current-time.txtIn this article, we have covered some of the most commonly used macro strings in the Windows Command Processor, including environment variables and other built-in macro strings. These macro strings can be used to simplify commands and batch files, and to access system and user-defined settings. By mastering the use of macro strings, you can become more efficient and productive when working with the Windows Command Processor.