Rename a Dell computer to the computer's service tag

RenameComputerToServiceTag.ps1

#Requires -RunAsAdministrator

# Get Dell Service Tag
# If empty or serial number is greater than 7 characters, exit script
$serial = (get-wmiobject win32_systemenclosure | select serialnumber).serialnumber
if ($serial.length -eq 0 -or $serial.length -gt 7) { Write-Output "Service tag not detected! Failed rename."; exit; }
Write-Output "Dell Service Tag: $serial"
Write-Output ""

# Rename
Write-Output "Renaming computer to $serial"
Write-Output ""
Rename-Computer -NewName $serial
Write-Output ""
Write-Output "Done! Restart computer to complete the rename. This script will not restart the computer automatically."
Write-Output ""