Ubuntu software update system upgrade

Note: Please switch root permissions before operation

sudo su

1. Software update
Update source

apt-get update

Update software

apt-get upgrade

2. System upgrade
Install system update

apt-get dist-upgrade

Reboot

reboot

Detect new version

apt-get update
update-manager -c -d

Make sure the software is up to date, and check the new version again

update-manager -c -d

Upgrade OK!