Windows Powershell
Command list:
1) Check environment variables. There are several methods to check environment variables:
Get-ChildItem -Path Env: # to retrieve all environment variables and values
dir env: # to list all environment variables
dir env:path # to list specific environment variables (path)
$Env:PATH # to list PATH variable
$Env:PATH -split ';' # to list PATH variable with all values separated
[System.Environment]::GetEnvironmentVariable('PATH','machine') > C:\backup-path.txt # to backup values of PATH variable
2) How to change environment variable: