An attempting update of ntopng on ubuntu 16.04 LTS resulted in this annoying error during 'apt-get install ntopng' ( run as root )
Executing /lib/systemd/systemd-sysv-install enable ntopng
Failed to execute operation: File Exists
dpkg: error processing package ntopng (–configure):
subprocess installed post-installation script returned error exit status 1
I'd previously completely removed ntopng using commands –
apt-get purge –auto-remove ntopng
deleting any other files/directories in /etc that were left over such as the empty directories /etc/ntop, /etc/pfring, /etc/nprobe, /etc/cento and /etc/nbox.
performed a reboot 'shutdown -r now'
and checked no ntopng files were left hanging around using
'dpkg -L ntopng'.
So all looked OK for a complete reinstall but this error fails the new installation.
Anybody have any idea what file the error is referring to ?
UPDATE – digging around, I had libfakeroot file left over in /usr/lib/x86_64-linux-gnu/libfakeroot which I trashed and started again – with same result.
Best Answer
The command "systemctl disable ntopng" then reinstall worked for me