rudy@rudy-Inspiron-N5010:~$ do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,239 kB]
Fetched 1,240 kB in 6s (59.1 kB/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'

Reading cache

Checking package manager

Can not upgrade

Your python3 install is corrupted. Please fix the '/usr/bin/python3'
symlink.