Enumerate all Email groups a user is a member of

Quick script to show all email distribution groups that a particular user is a member of:


#
# Cobbled together by Gnawgnu
# 5/17/08

#get the identity of the user by alias
$Username = (get-user gnawgnu).Identity

#search all groups for that user
$groups = get-group -Filter {Members -eq $username}

#display all groups that have an email address
#defined that's longer than 0 characters
$groups | Where-Object {$_.WindowsEmailAddress.Length -ne 0}