I'd like to upgrade from 16.04 to 20.04 passing through the 18.04. However, when I try to update to 18.04 I get:
The upgrade has aborted. The upgrade needs a total of 5.754 M free space on disk '/'. Please free at least an additional 3.059 M of disk space on '/'.
Here is the output of
$ df -h Filesystem Size Used Avail Use% Mounted on udev 3,9G 0 3,9G 0% /dev tmpfs 789M 9,4M 779M 2% /run /dev/sda5 19G 15G 2,6G 86% / tmpfs 3,9G 92M 3,8G 3% /dev/shm tmpfs 5,0M 0 5,0M 0% /run/lock tmpfs 3,9G 0 3,9G 0% /sys/fs/cgroup /dev/loop1 55M 55M 0 100% /snap/core18/1668 /dev/loop0 161M 161M 0 100% /snap/gnome-3-28-1804/116 /dev/loop2 28M 28M 0 100% /snap/snapd/6953 /dev/loop5 25M 25M 0 100% /snap/snapd/6434 /dev/loop4 59M 59M 0 100% /snap/discord/108 /dev/loop3 55M 55M 0 100% /snap/core18/1705 /dev/loop8 45M 45M 0 100% /snap/gtk-common-themes/1440 /dev/loop7 58M 58M 0 100% /snap/discord/109 /dev/loop6 49M 49M 0 100% /snap/gtk-common-themes/1474 /dev/sda6 421G 351G 49G 88% /home /dev/sda1 496M 66M 431M 14% /boot/efi tmpfs 789M 64K 789M 1% /run/user/1000
What is the best way of action given that (I suppose) I will later need some more space to upgrade to 20.04?