1 Open a command prompt. In this article we look at how to interface with environment variables using the Command Prompt and Windows PowerShell. You will get all the values of system variable. without using third party apps) to view variables of some application running in Windows, but the Sysinternals Process Explorer does this perfectly.That's it. It is then helpful to be able to see what environment variables are set already. If the statement is not true, that is, the VARIABLE variable does exist, program control skips to the next line of the batch file and continues. On your Windows PC go to My computer -> right click anywhere and select Properties -> Advanced system setting -> Environment variables. One option is to log out and back in again. Unsetting a Variable.

This is how you do it:To set persistent environment variables at the command line, we will use To edit the system variables, you’ll need an administrative command prompt. We can get the list of environment variables using the .NET class [Environment]::. reg query "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PATH All the commonly used CMD codes and system variables are given here: Set Windows system environment variables using CMD. The set command will print all available environment variables with their values, directly into the console output, so you will able to see them all at once. _num string: A text string to assign to the variable. To create an environment variable simply export the shell variable as an environment variable: export MY_VAR. [Environment]::GetEnvironmentVariables() You can list machine specific environment variables or user specific environment variables using this function.

2 Type the command below into the command prompt, and press Enter. The following example illustrates the use of the PATH environment variable within a batch file: The following command list all the local environment variables. For example, one common environment variable is called PATH, which is simply an ordered text string containing a list of directories that Windows should look in when an executable file is called. User environment variables are accessible to all apps which run in the current user context, system environment variables apply to all users and processes on the PC; process variables are applicable only to a specific process and volatile variables are those which exist only for the current logon session. Environment variables offer a useful way to control the way Windows operates with an extremely small footprint in terms of memory usage. See Windows Server 2003 Resource Kit Tools will also work with Windows XP and Windows XP SP1; use Windows XP Service Pack 2 Support Tools with Windows XP SP2. Now to set the new variable click on New under System variables and give the name of the variable and value is the path of the variable. However, we can avoid logging out if we send a One way is to get this message issued is to open the environment variables in the GUI, like we do in We can show a specific environment variable by adding And same as with the user variables we can query a specific variable.When setting environment variables on the command line, Deleting a system variable requires administrator privileges.
See The location of the user variables in the registry is: When setting environment variables through the registry, they will not recognized immediately. Environment variables are not often seen directly when using Windows. (see screenshot below) setx [variable name] "[variable value]" Substitute [variable name] in the command above with the actual variable name (ex: "Downloads") you want to use. System variables can be set through CMD and registry For ex. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Most interesting of these are user, system and process variables, as we can modify them.The most simple way to view the current user variables is to use the System Properties.Alternatively, you can view environment variables via the command prompt. We also note where in the registry the environment variables are set, if you needed to access them in such a fashion.You can use environment variables in the values of other environment variables. The reg tool can take care of that, however another setx command should be run afterwards to propagate the environment variables. Please consider using How to see names and values of environment variables in Windows 8 and Windows 7How to see names and values of environment variables in Windows 8 and Windows 7 They existed in OSes before Windows as well, such as MS-DOS.