I downloaded Ubuntu 16.04.3 LTS and installed the iso file as a virtual machine in VirtualBox running on Windows 7.
I enabled the universe repository:
sudo add-apt-repository universe
I got this result:
'universe' distribution component enabled for all sources
I updated:
sudo apt-get update
I got this result:
AppStream cache update failed
I then tried to download a package:
sudo apt-get install mtp-tools
I got this result:
E: Unable to locate package mtp-tools
libmtp
package in Xenial, however there is alibmtp9
package. Though I don't know what you hope to achieve with its installation since it doesn't contain any executables. Considering the content of the linked article, do you you perhaps mean to installmtp-tools
ormtpfs
? Those contain directly useful utilities that depend onlibmtp9
and will install it as a dependency. – David Foerster Dec 16 '17 at 12:32