No Luck Trying to Run Command Line Program

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    • #194021
      Topics: 4
      Replies: 5
      Points: 42
      Rank: Member

      I have a – what I thought would be simple – script... but cannot figure out what I am doing wrong. It is a command line run of TeamViewer to change some account parameters...

      If I run the same command in a CMD window as Administrator it works as expected.

      Here is my PowerShell script:

      $working_directory = "C:\Program Files (x86)\TeamViewer"
      $application = "TeamViewer.exe" 
      $ea_string = "--grant_easy_access"
      $SiteInitials = "AAA"
      $teamviwer_api_token = "12345-12342-12312323"
      # it appears that the order of the parameters makes a huge difference. Be careful.
      #TeamViewer.exe assign --api-token aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa --group AAA --alias "AAA-TEST" --grant-easy-access --reassign
      $command_string = "assign --api-token $teamviwer_api_token --group $SiteInitials --alias ""$ComputerName"" $ea_string --reassign"
      Write-Output "Working directory is $working_directory"
      Write-Output "Application name is $application"
      Write-Output "Command Arguments = $command_string"
      #attempt number one
      Start-Process -FilePath $application -WorkingDirectory $working_directory -ArgumentList $command_string 
      # if I add the following to the Start-Process line above I get an error...
      #-RedirectStandardOutput "E:\sout.txt"
      #attempt number two
      $CMD = "$working_directory\$application"
      $arg1 = 'assign'
      $arg2 = "--api-token $teamviwer_api_token"
      $arg3 = "--group $SiteInitials"
      $arg4 = "--alias ""$ComputerName"""
      $arg5 = "$ea_string --reassign"
      & $CMD $arg1 $arg2 $arg3 $arg4 $arg5

      It does not help that there is no output from TeamViewer when you run this but it seems like it is not running.

      Help – please. Any thoughts?

      Thanks in advance!



    • #194027
      Topics: 4
      Replies: 5
      Points: 42
      Rank: Member

      Ok – so I figured it out – I think...

      TeamViewer produces no output – which is bad...

      It turns out the argument

      $ea_string = "--grant_easy_access"

      should have been

      $ea_string = "--grant-easy-access"

      with dashes...

      Lesson learned – always make sure your programs produce output... shame on TeamViewer!

      Still would love any feedback on the code...

    • #194036
      Topics: 10
      Replies: 1381
      Points: 1,509
      Helping Hand
      Rank: Community Hero

      The arguments parameter is a string array, so you can write your code like this:

      $ComputerName        = 'Computer123'
      $ea_string           = "--grant-easy-access"
      $SiteInitials        = "AAA"
      $teamviwer_api_token = "12345-12342-12312323"
      $tvArgs = @()
      $tvArgs += 'assign'
      $tvArgs += '--api-token {0}' -f $teamviwer_api_token
      $tvArgs += '--group {0}'     -f $SiteInitials
      $tvArgs += '--alias "{0}"'   -f $ComputerName
      $tvArgs += '{0} --reassign'  -f $ea_string
      $params = @{
          FilePath         = 'TeamViewer.exe'
          WorkingDirectory = 'C:\Program Files (x86)\TeamViewer' 
          ArgumentList     = $tvArgs
          Wait             = $true
          ErrorAction      = 'Stop'
      try {
          $result = Start-Process @params
      catch {
          Throw 'Issue installing {0}. {1}' -f $params.FilePath, $_
      # If the catch doesn't work or you are not getting a code or message in $result, you can do a check
      # by setting the -Wait above and then doing a path, registry or some other check to confirm installation
      if ($someCheck = $someValue) {
          'Installation was successful'
      else {
          'Installation failed'

      You can check the parameters:

      PS C:\WINDOWS\system32> $tvargs
      --api-token 12345-12342-12312323
      --group AAA
      --alias "Computer123"
      --grant-easy-access --reassign
      PS C:\WINDOWS\system32> $params
      Name                           Value                                                                                                                                                                                                                             
      ----                           -----                                                                                                                                                                                                                             
      Wait                           True                                                                                                                                                                                                                              
      FilePath                       TeamViewer.exe                                                                                                                                                                                                                    
      ArgumentList                   {assign, --api-token 12345-12342-12312323, --group AAA, --alias "Computer123"...}                                                                                                                                                 
      ErrorAction                    Stop                                                                                                                                                                                                                              
      WorkingDirectory               C:\Program Files (x86)\TeamViewer                                                                                                                                                                                                 
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