O problema com Get-WmiObject Win32_LoggedOnUser | Select Antecedent -Unique
é que ele mostra todas as sessões, mesmo aquelas que foram fechadas desde a última vez em que o computador foi reinicializado. A maneira mais fácil de pesquisar sessões infelizmente está usando o antigo executável query.exe.
Você pode converter a saída de query.exe em objetos usando um pouco de regex:
$Computer = $env:COMPUTERNAME
$Users = query user /server:$Computer 2>&1
$Users = $Users | ForEach-Object {
(($_.trim() -replace ">" -replace "(?m)^([A-Za-z0-9]{3,})\s+(\d{1,2}\s+\w+)", '$1 none $2' -replace "\s{2,}", "," -replace "none", $null))
} | ConvertFrom-Csv
foreach ($User in $Users)
{
[PSCustomObject]@{
ComputerName = $Computer
Username = $User.USERNAME
SessionState = $User.STATE.Replace("Disc", "Disconnected")
SessionType = $($User.SESSIONNAME -Replace '#', '' -Replace "[0-9]+", "")
}
}
O que lhe dará uma saída assim:
ComputerName Username SessionState SessionType
------------ -------- ------------ -----------
BSMITH-LT bobsm Active console
Levando mais longe para uma função:
function Convert-QueryToObjects
{
[CmdletBinding()]
[Alias('QueryToObject')]
[OutputType([PSCustomObject])]
param
(
[Parameter(Mandatory = $false,
ValueFromPipeline = $true,
ValueFromPipelineByPropertyName = $true,
Position = 0)]
[Alias('ComputerName', 'Computer')]
[string]
$Name = $env:COMPUTERNAME
)
Process
{
Write-Verbose "Running query.exe against $Name."
$Users = query user /server:$Name 2>&1
if ($Users -like "*No User exists*")
{
# Handle no user's found returned from query.
# Returned: 'No User exists for *'
Write-Error "There were no users found on $Name : $Users"
Write-Verbose "There were no users found on $Name."
}
elseif ($Users -like "*Error*")
{
# Handle errored returned by query.
# Returned: 'Error ...<message>...'
Write-Error "There was an error running query against $Name : $Users"
Write-Verbose "There was an error running query against $Name."
}
elseif ($Users -eq $null -and $ErrorActionPreference -eq 'SilentlyContinue')
{
# Handdle null output called by -ErrorAction.
Write-Verbose "Error action has supressed output from query.exe. Results were null."
}
else
{
Write-Verbose "Users found on $Name. Converting output from text."
# Conversion logic. Handles the fact that the sessionname column may be populated or not.
$Users = $Users | ForEach-Object {
(($_.trim() -replace ">" -replace "(?m)^([A-Za-z0-9]{3,})\s+(\d{1,2}\s+\w+)", '$1 none $2' -replace "\s{2,}", "," -replace "none", $null))
} | ConvertFrom-Csv
Write-Verbose "Generating output for $($Users.Count) users connected to $Name."
# Output objects.
foreach ($User in $Users)
{
Write-Verbose $User
if ($VerbosePreference -eq 'Continue')
{
# Add '| Out-Host' if -Verbose is tripped.
[PSCustomObject]@{
ComputerName = $Name
Username = $User.USERNAME
SessionState = $User.STATE.Replace("Disc", "Disconnected")
SessionType = $($User.SESSIONNAME -Replace '#', '' -Replace "[0-9]+", "")
} | Out-Host
}
else
{
# Standard output.
[PSCustomObject]@{
ComputerName = $Name
Username = $User.USERNAME
SessionState = $User.STATE.Replace("Disc", "Disconnected")
SessionType = $($User.SESSIONNAME -Replace '#', '' -Replace "[0-9]+", "")
}
}
}
}
}
}
e agora você pode fazer coisas como: Get-ADComputer -Filter {Name -like "SERVER*"} | Convert-QueryToObjects | ? {$_.SessionState -eq 'Active'}