Install latest updates to Ubuntu Mate 15.10 without reinstalling entire OS again?

[lah7]

For the desktop and PowerPC versions, the aforementioned commands installs all available updates for that version:

sudo apt-get update && sudo apt-get dist-upgrade

Equivalent to using the Software Updater to install updates graphically.

For upgrading across versions (ie. 15.04 → 15.10), you would use:

sudo do-release-upgrade

Also, the graphical alternate than receiving the notification in the Software Updater.

But... the kernel used in the Raspberry Pi is different, @Wimpy warns to not attempt upgrades across 15.04 to 15.10. Regular updates can be applied as normal.

@Wimpy

Don't try upgrading to Pi version, it simply won't work and will also take hours. Is it possible you filled to microSDHC card.

@Wimpy

I've posted this several times, release upgrading the Pi version simply will not work. The kernel architecture on 15.04 and 15.10 is entirely different.

There are ways to "save" which packages you have installed to a file using synaptic to then re-install after setting up the OS again.