In Xul, How To Retrieve An Environment Variable?

I have an environment called $REP, how can I access the value of this variable using Xulrunner in a Linux environment? --udpate attempting with nslEnvironment: var env = Components

Solution 1:

Use nsIEnvironment to read (and set) environment variables.

Solution 2:

Have a look at Setting an environment variable in javascript (which you happened to edit, randomly!).

I very much doubt you'll be able to read these variables from a browser environment though.

edit:

var oShell = WScript.CreateObject("WScript.Shell");
var oSysEnv = oShell.Environment("SYSTEM");
WScript.Echo (oSysEnv("PATH"));

perhaps?