Menu
1: Reset PowerShell or Command Prompt to Default Settings If you know what setting you changed, you can revert by right-clicking on the top of a Powershell or Command Prompt window and click on Properites. Look for the setting you want to change. If you're not sure what was changed, click on Defaults.
2. Refresh Environment Variables via Command Prompt (CMD) Step 1: In the Start menu, search for Command Prompt and run it as an administrator. Step 2: Type the command: “set PATH = c” (without quotation marks), press the enter key, and restart the Command Prompt.
The $_ is a variable or also referred to as an operator in PowerShell that is used to retrieve only specific values from the field. It is piped with various cmdlets and used in the “Where” , “Where-Object“, and “ForEach-Object” clauses of the PowerShell.
Use $Env:PATH to Set the PATH Environment Variables in Windows PowerShell. Usually, we can set the PATH variable by navigating through the control panel of our operating system. However, inside Windows PowerShell, we can output all our file paths using the $Env:PATH environment variable.
Just to bring Rob's comment to light:
$env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path","User")
Try getting the machine path and assigning it to the session's path.
$env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine")
Easiest way, use Chocolatey (freeware). It works for both CMD and PowerShell. Then you will be able to reload PATH (with variable expansion) with a simple command:
refreshenv
Installation from cmd (requires administrator rights):
@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
Example usage:
> SET JAVA_HOME=c:/java/jdk6
> SET PATH=%JAVA_HOME%/bin
> ECHO %PATH%
c:/java/jdk6/bin
> SET JAVA_HOME=c:/java/jdk8
> refreshenv
Refreshing environment variables from registry for cmd.exe. Please wait...Finished..
> echo %PATH%
c:/java/jdk8/bin
Based on mpen's answer, here is a PowerShell function:
function refresh-path {
$env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") +
";" +
[System.Environment]::GetEnvironmentVariable("Path","User")
}
Then just call refresh-path.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With