mandel@ubuntu:~$ ps aux |grep update
mandel    2081  0.1  0.5  79964 10320 ?        Sl   02:11   0:03 update-notifier
mandel    2611  0.0  0.9  78460 20232 ?        Sl   02:20   0:02 /usr/bin/python /usr/lib/update-notifier/backend_helper.py install_all_updates
root      2640  0.0  0.3  14728  7116 ?        S    02:20   0:00 /usr/bin/python /usr/share/apt-xapian-index/update-apt-xapian-index-dbus
mandel    3193  0.0  0.9  78172 20060 ?        Sl   02:26   0:01 /usr/bin/python /usr/lib/update-notifier/backend_helper.py install_all_updates
mandel   28572  0.0  0.0   4372   832 pts/1    S+   02:58   0:00 grep --color=auto update
mandel@ubuntu:~$