Is there a command line utility to display the WS

In Process Explorer terms it is WS Private Bytes, whereas in Task Manager terms it is Private Working Set.

I would like a command line utility to display this information given a process name.

EDIT

A powershell script will do as well.

In PowerShell you may use:

[EDIT]

function ProcessInfo
{
    param
    ([String]$processName)

    $workingSet = get-counter -counter "\Process($processName)\Working Set - Private" | select -expandproperty countersamples | select cookedvalue
    $privateBytes = get-counter -counter "\Process($processName)\Private Bytes" | select -expandproperty countersamples | select cookedvalue

    get-process $processName | select `
        name, `
        @{Name="Private Working Set"; Expression = {$workingSet.CookedValue}},`
        @{Name="WS Private Bytes"; Expression = {$privateBytes.CookedValue}}
}

ProcessInfo("winrar")

[EDIT2]

Here's an improved version which takes the process id as a parameter.

function GetProcessInfoById
{
    param
    ([int]$processId)

    Get-WmiObject -class Win32_PerfFormattedData_PerfProc_Process | where{$_.idprocess -eq $processId} | select `
    @{Name="Process Id"; Expression = {$_.idprocess}},`
    @{Name="Counter Name"; Expression = {$_.name}},`
    @{Name="Private Working Set"; Expression = {$_.workingSetPrivate / 1kb}}        
}

GetProcessInfoById 380

And here's an version which takes the process name as a parameter. This may return multiple values (one for each instance of the process) and you can identify processes by the values by the Process Id.

function GetProcessInfoByName
{
    param
    ([string]$processName)

    Get-WmiObject -class Win32_PerfFormattedData_PerfProc_Process | where{$_.name -like $processName+"*"} | select `
    @{Name="Process Id"; Expression = {$_.idprocess}},`
    @{Name="Counter Name"; Expression = {$_.name}},`
    @{Name="Private Working Set"; Expression = {$_.workingSetPrivate / 1kb}}
}

GetProcessInfoByName svchost