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i was upgrading to 15.10 with these two commands that i found on ubuntu forums:
sudo sed -i 's/vivid/wily/g' /etc/apt/sources.list sudo apt-get update && sudo apt-get dist-upgrade
but at some point it showed network failure and it stopped so i tried this command:
but the problem i encountered is that even on rebooting on screen it flashes 15.04 now if i redo the upper two commands will it create duplicate repositories that i will have to take care of? because i dont have enough space on my laptop to waste. and any other detail for my upgrade to 15.10 would be highly appreciated!