When I try to upgrade
sudo apt-get upgrade
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
Then I have used grep to see all the activity
ps aux | grep apt
root 3479 1.1 1.2 288624 102116 ? SNl 09:29 0:02 /usr/bin/python3 /usr/sbin/aptd
_apt 31744 0.0 0.0 47116 5792 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31745 0.0 0.0 47116 5708 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31746 1.3 0.4 217216 33604 ? SN 09:32 0:00 /usr/lib/apt/methods/https
_apt 31747 0.0 0.0 47116 5596 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31748 0.0 0.0 47116 5820 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31750 0.0 0.0 42708 5032 ? SN 09:32 0:00 /usr/lib/apt/methods/file
_apt 31751 0.0 0.0 47116 5904 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31752 0.0 0.0 47116 5596 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31753 0.0 0.0 47116 5600 ? SN 09:32 0:00 /usr/lib/apt/methods/http
_apt 31754 0.0 0.0 47116 5884 ? SN 09:32 0:00 /usr/lib/apt/methods/http
root 31755 0.0 0.0 34268 4764 ? SN 09:32 0:00 /usr/lib/apt/methods/cdrom
_apt 31758 0.0 0.0 42832 5544 ? SN 09:32 0:00 /usr/lib/apt/methods/copy
_apt 31760 0.0 0.0 42740 5480 ? SN 09:32 0:00 /usr/lib/apt/methods/gpgv
milenko 32362 0.0 0.0 14228 1020 pts/17 S+ 09:32 0:00 grep --color=auto apt
Which process should I kill?
sudo lsof /var/lib/dpkg/lock. Readman lsof. – waltinator Mar 08 '17 at 15:07