PowerShell: Display all Environment variables

Below is a list of different approaches that can be used to get all the environment variables in windows using PowerShell.

Get-ChildItem -Path Env:
(or)
$Env:
(or)
dir env:
(or)
gci env:
(or)
ls env:

Get specific environment variable value

In the below example, the Get-ChildItem command prints the environment variable value for the APPDATA variable.

Get-ChildItem Env:APPDATA

Sort environment variables by name

Sort cmdlet take the output of the Get-ChildItem command and sort the list of PowerShell environment variables by the variable name.

Get-ChildItem Env: | Sort Name

List environment variables using a wildcard 

In the below example, the Get-ChildItem command prints the environment variable value for the variable name starting with the user string.

Get-ChildItem Env:user*

Copy all environment variables to file

In the below example, Export-CSV writes the output of Get-ChildItem to a given file.

Get-ChildItem env: | sort-object name | Export-Csv -Path E:\env_variables_output.txt -NoTypeInformation