Difference between revisions of "Windows environment variables"

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This is a list of Windows environment variables / Windows system variables:
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|ALLUSERSPROFILE || Local returns the location of the All Users Profile.
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|'''ALLUSERSPROFILE''' || Local returns the location of the All Users Profile.
 
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|-
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| APPDATA || Local returns the location where applications store data by default.
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| '''APPDATA''' || Local returns the location where applications store data by default.
 
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| CD || Local returns the current directory string.
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| '''CD''' || Local returns the current directory string.
 
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| CMDCMDLINE || Local returns the exact command line used to start the current cmd.exe.
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| '''CMDCMDLINE''' || Local returns the exact command line used to start the current cmd.exe.
 
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| CMDEXTVERSION || System returns the version number of the current Command Processor Extensions.
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| '''CMDEXTVERSION''' || System returns the version number of the current Command Processor Extensions.
 
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| COMPUTERNAME || System returns the name of the computer.
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| '''COMPUTERNAME''' || System returns the name of the computer.
 
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| COMSPEC || System returns the exact path to the command shell executable.
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| '''COMSPEC''' || System returns the exact path to the command shell executable.
 
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| DATE || System returns the current date. This variable uses the same format as the date /t command. Cmd.exe generates this variable. For more information about the date command, see the Date command.
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| '''DATE''' || System returns the current date. This variable uses the same format as the date /t command. Cmd.exe generates this variable. For more information about the date command, see the Date command.
 
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| ERRORLEVEL || System returns the error code of the most recently used command. A non-0 value usually indicates an error.
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| '''ERRORLEVEL''' || System returns the error code of the most recently used command. A non-0 value usually indicates an error.
 
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| HOMEDRIVE || System returns which local workstation drive letter is connected to the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
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| '''HOMEDRIVE''' || System returns which local workstation drive letter is connected to the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
 
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| HOMEPATH || System returns the full path of the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
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| '''HOMEPATH''' || System returns the full path of the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
 
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| HOMESHARE || System returns the network path to the user's shared home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
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| '''HOMESHARE''' || System returns the network path to the user's shared home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
 
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| LOGONSEVER || Local returns the name of the domain controller that validated the current logon session.
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| '''LOGONSEVER''' || Local returns the name of the domain controller that validated the current logon session.
 
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| NUMBER_OF_PROCESSORS || System specifies the number of processors installed on the computer.
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| '''NUMBER_OF_PROCESSORS''' || System specifies the number of processors installed on the computer.
 
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| OS || System returns the OS name. Windows XP and Windows 2000 display the OS as Windows_NT.
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| '''OS''' || System returns the OS name. Windows XP and Windows 2000 display the OS as Windows_NT.
 
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| PATH || System specifies the search path for executable files.
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| '''PATH''' || System specifies the search path for executable files.
 
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| PATHEXT || System returns a list of the file extensions that the OS considers to be executable.
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| '''PATHEXT''' || System returns a list of the file extensions that the OS considers to be executable.
 
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| PROCESSOR_ARCHITECTURE || System returns the processor's chip architecture. Values: x86, IA64.
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| '''PROCESSOR_ARCHITECTURE''' || System returns the processor's chip architecture. Values: x86, IA64.
 
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| PROCESSOR_IDENTFIER || System returns a description of the processor.
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| '''PROCESSOR_IDENTFIER''' || System returns a description of the processor.
 
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| PROCESSOR_LEVEL || System returns the model number of the computer's processor.
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| '''PROCESSOR_LEVEL''' || System returns the model number of the computer's processor.
 
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| PROCESSOR_REVISION || System returns the revision number of the processor.
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| '''PROCESSOR_REVISION''' || System returns the revision number of the processor.
 
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| PROMPT || Local returns the command-prompt settings for the current interpreter. Cmd.exe generates this variable.
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| '''PROMPT''' || Local returns the command-prompt settings for the current interpreter. Cmd.exe generates this variable.
 
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| RANDOM || System returns a random decimal number between 0 and 32767. Cmd.exe generates this variable.
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| '''RANDOM''' || System returns a random decimal number between 0 and 32767. Cmd.exe generates this variable.
 
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| SYSTEMDRIVE || System returns the drive containing the Windows root directory (i.e., the system root).
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| '''SYSTEMDRIVE''' || System returns the drive containing the Windows root directory (i.e., the system root).
 
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| SYSTEMROOT || System returns the location of the Windows root directory.
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| '''SYSTEMROOT''' || System returns the location of the Windows root directory.
 
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| TEMP or TMP || System and User return the default temporary directories for applications that are available to users who are currently logged on. Some applications require TEMP and others require TMP.
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| '''TEMP''' or '''TMP''' || System and User return the default temporary directories for applications that are available to users who are currently logged on. Some applications require TEMP and others require TMP.
 
|-
 
|-
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| TIME || System returns the current time. This variable uses the same format as the time /t command. Cmd.exe generates this variable. For more information about the time command, see the Time command.
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| '''TIME''' || System returns the current time. This variable uses the same format as the time /t command. Cmd.exe generates this variable. For more information about the time command, see the Time command.
 
|-
 
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| USERDOMAIN || Local returns the name of the domain that contains the user's account.
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| '''USERDOMAIN''' || Local returns the name of the domain that contains the user's account.
 
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| USERNAME || Local returns the name of the user currently logged on.
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| '''USERNAME''' || Local returns the name of the user currently logged on.
 
|-
 
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| USERPROFILE || Local returns the location of the profile for the current user.
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| '''USERPROFILE''' || Local returns the location of the profile for the current user.
 
|-
 
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| WINDIR || System returns the location of the OS directory
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| '''WINDIR''' || System returns the location of the OS directory
 
|}
 
|}
  
 
[[Category:Documentation]]
 
[[Category:Documentation]]

Revision as of 22:21, 18 November 2007

This is a list of Windows environment variables / Windows system variables:

ALLUSERSPROFILE Local returns the location of the All Users Profile.
APPDATA Local returns the location where applications store data by default.
CD Local returns the current directory string.
CMDCMDLINE Local returns the exact command line used to start the current cmd.exe.
CMDEXTVERSION System returns the version number of the current Command Processor Extensions.
COMPUTERNAME System returns the name of the computer.
COMSPEC System returns the exact path to the command shell executable.
DATE System returns the current date. This variable uses the same format as the date /t command. Cmd.exe generates this variable. For more information about the date command, see the Date command.
ERRORLEVEL System returns the error code of the most recently used command. A non-0 value usually indicates an error.
HOMEDRIVE System returns which local workstation drive letter is connected to the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
HOMEPATH System returns the full path of the user's home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
HOMESHARE System returns the network path to the user's shared home directory. This variable is set based on the value of the home directory. The user's home directory is specified in Local Users and Groups.
LOGONSEVER Local returns the name of the domain controller that validated the current logon session.
NUMBER_OF_PROCESSORS System specifies the number of processors installed on the computer.
OS System returns the OS name. Windows XP and Windows 2000 display the OS as Windows_NT.
PATH System specifies the search path for executable files.
PATHEXT System returns a list of the file extensions that the OS considers to be executable.
PROCESSOR_ARCHITECTURE System returns the processor's chip architecture. Values: x86, IA64.
PROCESSOR_IDENTFIER System returns a description of the processor.
PROCESSOR_LEVEL System returns the model number of the computer's processor.
PROCESSOR_REVISION System returns the revision number of the processor.
PROMPT Local returns the command-prompt settings for the current interpreter. Cmd.exe generates this variable.
RANDOM System returns a random decimal number between 0 and 32767. Cmd.exe generates this variable.
SYSTEMDRIVE System returns the drive containing the Windows root directory (i.e., the system root).
SYSTEMROOT System returns the location of the Windows root directory.
TEMP or TMP System and User return the default temporary directories for applications that are available to users who are currently logged on. Some applications require TEMP and others require TMP.
TIME System returns the current time. This variable uses the same format as the time /t command. Cmd.exe generates this variable. For more information about the time command, see the Time command.
USERDOMAIN Local returns the name of the domain that contains the user's account.
USERNAME Local returns the name of the user currently logged on.
USERPROFILE Local returns the location of the profile for the current user.
WINDIR System returns the location of the OS directory
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