Uses WMI to return information about all the environment variables on a computer.

This script was tested using Object REXX 2.1.0 for Microsoft Windows, available from IBM.

Object REXX
strComputer = "."
objWMIService = .OLEObject~GetObject("winmgmts:\\"||strComputer||"\root\CIMV2")
do objItem over objWMIService~ExecQuery("Select * from Win32_Environment")
    say "Caption:" objItem~Caption
    say "Description:" objItem~Description
    say "Install Date:" objItem~InstallDate
    say "Name:" objItem~Name
    say "Status:" objItem~Status
    say "System Variable:" objItem~SystemVariable
    say "User Name:" objItem~UserName
    say "Variable Value:" objItem~VariableValue