使用PowerShell命令查询Active Directory中长时间没有登录计算机帐户。以180天为例：

# This PowerShell Command will query Active Directory and return the computer accounts which have not logged for the past

# 180 days.  You can easily change the number of days from 180 to any number of your choosing.

# lastLogonDate is a Human Readable conversion of the lastLogonTimeStamp

# The 180 is the number of days from today since the last logon.

$then = (Get-Date).AddDays(-180)           

Get-ADComputer -Property Name,lastLogonDate -Filter {lastLogonDate -lt $then} | FT Name,lastLogonDate

# If you would like to Disable these computer accounts, uncomment the following line:

Get-ADComputer -Property Name,lastLogonDate -Filter {lastLogonDate -lt $then} | Set-ADComputer -Enabled $false

# If you would like to Remove these computer accounts, uncomment the following line:

Get-ADComputer -Property Name,lastLogonDate -Filter {lastLogonDate -lt $then} | Remove-ADComputer