Const
  ctFile = '.DS_Store';
Begin
  psExitCode := 1;
  // ... add your code here
  If FileExists(psFilePath + ctFile) Then
  Begin
    If DeleteFile(psFilePath + ctFile) Then
      psLogWrite(1, '', 'Deleted ' + ctFile + ' in ' + psFilePath)
    Else
      psLogWrite(1, '', 'Error: could not delete ' + ctFile + ' in ' + psFilePath);
  End;
End.