Connect-VIServer 1.1.1.1
$esxihosts = Get-VMHost
foreach ($esxihost in $esxihosts)
{
$esxcli = get-esxcli -VMHost $esxihost
$account = $esxcli.system.account.list()
$account | Select @{N="Host";E={$esxihost.Name}},UserId | Export-csv -append -Path C:\temp\acc.csv -NoTypeInformation
}