Changes for pinfo log file option and print user warning to stderr lo…

…g2timeline#4787 (log2timeline#4792)

plaso/cli/pinfo_tool.py

@@ -1523,6 +1523,7 @@ def ParseArguments(self, arguments):
 
     self.AddBasicOptions(argument_parser)
     self.AddStorageOptions(argument_parser)
+    self.AddLogFileOptions(argument_parser)
 
     if self._CanEnforceProcessMemoryLimit():
       helpers_manager.ArgumentHelperManager.AddCommandLineArguments(
@@ -1608,6 +1609,8 @@ def ParseOptions(self, options):
     """
     self._ParseInformationalOptions(options)
 
+    self._ParseLogFileOptions(options)
+
     self._verbose = getattr(options, 'verbose', False)
 
     self._report_type = getattr(

plaso/cli/tools.py

@@ -192,8 +192,8 @@ def _PrintUserWarning(self, warning_text):
       warning_text (str): text used to warn the user.
     """
     warning_text = textwrap.wrap(f'WARNING: {warning_text:s}', 80)
-    print('\n'.join(warning_text))
-    print('')
+    print('\n'.join(warning_text), file=sys.stderr)
+    print('', file=sys.stderr)
 
     self._has_user_warning = True
 
@@ -281,7 +281,9 @@ def CheckOutDated(self):
     date_time_delta = datetime.datetime.utcnow() - version_date_time
 
     if date_time_delta.days > 180:
-      logger.warning('This version of plaso is more than 6 months old.')
+      logger.warning((
+          'This version of plaso is more than 6 months old. We strongly '
+          'recommend to update it.'))
 
       self._PrintUserWarning((
           'the version of plaso you are using is more than 6 months old. We '