# Get domain users and associated groups
#
Get-DomainUsers | select name, memberof
 
# Get all service accounts in a domain
#
Get-DomainUsers -SPN
 
# Get all domain group members, including nested domain groups
#
Get-DomainGroupMember -Identity $GROUP_NAME
 
# Show all users that previously logged on to a machine
# (defaults to local machine; requires admin privileges to be
# run against remote machines)
#
Get-NetLoggedon | select UserName
 
# Show all users who are logged in to a machine RIGHT NOW
# (does not require admin privileges for remote systems if run
# from Windows Server)
#
Get-NetSession