/usr/lib/python3/dist-packages/UpdateManager/HelpViewer.py is in update-manager 1:16.04.12.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | # helpviewer.py
# -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
import os
import subprocess
# Hardcoded list of available help viewers
# FIXME: khelpcenter support would be nice
#KNOWN_VIEWERS = ["/usr/bin/yelp", "/usr/bin/khelpcenter"]
KNOWN_VIEWERS = ["/usr/bin/yelp"]
class HelpViewer:
def __init__(self, docu):
self.command = []
self.docu = docu
for viewer in KNOWN_VIEWERS:
if os.path.exists(viewer):
self.command = [viewer, "help:%s" % docu]
break
def check(self):
"""check if a viewer is available"""
if self.command == []:
return False
else:
return True
def run(self):
"""open the documentation in the viewer"""
# avoid running the help viewer as root
if os.getuid() == 0 and 'SUDO_USER' in os.environ:
self.command = ['sudo', '-u', os.environ['SUDO_USER']] +\
self.command
subprocess.Popen(self.command)
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