get-tasklist.ps1

<#
.Synopsis
   A wrapper for the tasklist /v /s COMPUTERNAME
.DESCRIPTION
   This is a wrapper for the tasklist command. In the case PowerShell remoting is not available, this cmdlet would be useful to gather the process infromation.

#>
function Get-Tasklist
{
    [CmdletBinding()]
        
    Param
    (
        [Parameter(Mandatory=$true,
                   ValueFromPipelineByPropertyName=$true,
                   Position=0)]
        [string[]]$ComputerName
        
    )

    Begin
    {           
        [string[]]$result = ""
               
    }
    
    Process
    {
        foreach ($c in $ComputerName) {
            
            Write-Verbose -Message "checking $c"
            $result = tasklist /v /s "$c"
            if (!$?){                         
                # Better error handling can happen here.
                Write-Warning 'Tasklist failed.'
                throw
            }
            
            
            # Parsing the formatting based on the tasklist output 
            $format = $result[2] | ConvertFrom-String | measure -Property * -Character | select property, characters
            
            foreach ($r in $result){
                    
                    if ($r.length -eq 0){
                        Write-Verbose 'Hitting a blank line'
                        continue
                    }

                    if ($r -match '^(===)+' -or $r -match '^Image\sName\s+PID'){
                        Write-Verbose 'Hitting the headers'
                        continue
                    }

                    else{
                    
                        Write-Verbose -Message "checking $r"
                        [int]$StringPosition = 0
                        [int]$FieldCount = 0

                        $ImageName = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                             $StringPosition = $StringPosition + $format[$FieldCount].characters + 1
                             $FieldCount = $FieldCount +1
                         
                        $ProcessID = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters +1
                            $FieldCount = $FieldCount +1
                    
                        $SessionName = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters +1
                            $FieldCount = $FieldCount +1
                        
                        $Session = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters+1
                            $FieldCount = $FieldCount +1
                        
                        $MemUsage = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters+1
                            $FieldCount = $FieldCount +1
                                        
                        $UserName = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters+1
                            $FieldCount = $FieldCount +1
                    
                        $CPUTime = ($r.Substring($StringPosition,$format[$FieldCount].characters)).Trim()
                            $StringPosition = $StringPosition + $format[$FieldCount].characters+1
                            $FieldCount = $FieldCount +1
                                                                    

                        $prop = [ordered]@{
                            'ComputerName' = $c
                            'ImageName' = $ImageName
                            'PID' = $ProcessID
                            #'SessionName' = $SessionName
                            'Session#' = $Session
                            'MemUsage' = $MemUsage
                            #'Status' = $Status
                            'UserName' = $UserName
                            'CPUTime' = $CPUTime
                            #'WindowTitle' = $WindowTitle      
                        } #End of $prop block
                    
                        $ProcObj = New-Object -TypeName psobject -Property $prop
                    
                        Write-Output $ProcObj
                        
                } #End of else block
            } #End of foreach block of result text parsing 
        } #End of foreach block for computers
    } #End of process block
    
    End
    {
    }
} #End of function