Large effects: lost the software updater and firefox... Reinstalled firefox to continue 'Software updater' is not found
tmp> sudo do-release-upgrade sudo: do-release-upgrade: command not found tmp> type python python is /usr/bin/python tmp> python -V Python 2.7.18 tmp> python3 -V Python 3.8.10
Large effects: lost the software updater and firefox...
Reinstalled firefox to continue
'Software updater' is not found
tmp> sudo do-release-upgrade
sudo: do-release-upgrade: command not found
tmp> type python
python is /usr/bin/python
tmp> python -V
Python 2.7.18
tmp> python3 -V
Python 3.8.10