Scripting Games 2012 comments: #16 reading environmental variables
Windows maintains a set of environmental variables. Some, but not all, can be seen via the env: PowerShell drive
Get-ChildItem -Path env:
You can also use WMI to see some of the variables
Get-WmiObject -Class Win32_Environment | ft Name, VariableValue –a
Now how do you read them in your scripts?
I noticed a lot of people doing this
$name = (Get-Item env:\Computername).Value
It works but its a bit long winded. A better method is this
$name = $env:COMPUTERNAME
$env: is the environment provider surfaced as a namespace
You can also use this technique with other providers e.g.
It doesn’t work with all providers e.g. the registry.