After recently updating from 14.04 to 16.04, I tried to update to 18.04. However, when I try to do this, it keeps on failing presumably because of no disk space. When I click "Properties" on the "Computer" tab in "Files", it says that I have absolutely no free disk space, which I found strange because I transferred 40GB to a hard disk just before trying to update to 18.04 for the first time. I only just realized that memory could be a problem, but till now, I have tried to update to 18.04 multiple times.
When I do dpkg -l linux-headers-\* linux-image-\* | grep ^ii, I get the following, probably because I tried to update to 18.04 a lot of times:
ii linux-headers-4.4.0-141 4.4.0-141.167 all Header files related to Linux kernel version 4.4.0
ii linux-headers-4.4.0-141-generic 4.4.0-141.167 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP
ii linux-headers-4.4.0-142 4.4.0-142.168 all Header files related to Linux kernel version 4.4.0
ii linux-headers-4.4.0-142-generic 4.4.0-142.168 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP
ii linux-headers-generic 4.4.0.142.148 amd64 Generic Linux kernel headers
ii linux-image-3.16.0-43-generic 3.16.0-43.58~14.04.1 amd64 Linux kernel image for version 3.16.0 on 64 bit x86 SMP
ii linux-image-4.4.0-141-generic 4.4.0-141.167 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-4.4.0-142-generic 4.4.0-142.168 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP
ii linux-image-extra-3.16.0-43-generic 3.16.0-43.58~14.04.1 amd64 Linux kernel extra modules for version 3.16.0 on 64 bit x86 SMP
ii linux-image-extra-4.4.0-141-generic 4.4.0-141.167 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii linux-image-extra-4.4.0-142-generic 4.4.0-142.168 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP
ii linux-image-generic 4.4.0.142.148 amd64 Generic Linux kernel image
Is the existence of so many images and headers causing the memory full issue? If yes, how do I delete the proper ones?
The cause for the memory full issue is that my /var/log/cups/error_log is 86GB! Can I just delete this or is there a better and safer solution?
