$names = "input.txt" 
Import-Module ActiveDirectory 
$objInputFileContent = get-content $strInputFileName 
foreach ($name in $names) { 
write-output $name >>members.txt 
write-output `r`n  >>members.txt 
$((Get-ADUser -Identity $name -Properties *).MemberOf -split (",")  | Select-String -SimpleMatch "CN=") -replace "CN=","" >>members.txt 
write-output .......  >>members.txt 
write-output `r`n  >>members.txt 
write-output `r`n  >>members.txt 
} 

UserName
SamAccount