Can't Use apt i.e. /boot is 100% full

Note: Only in cases where cleanup cannot be done with apt due to 100% full/boot


Get a list of kernel images and determine which will be removed. This command will display the installed kernels, except for the currently running kernel




dpkg --list 'linux-image*'|awk '{ if ($1=="ii") print $2}'|grep -v `uname -r`


linux-image-4.15.0-46-generic

linux-image-4.15.0-50-generic

linux-image-4.15.0-51-generic

linux-image-4.15.0-52-generic

linux-image-4.15.0-54-generic

Linux-image-4.15.0-55-generic




First, get the list of currently running Linux kernels and run:


v="$(uname -r | awk -F '-virtual' '{ print $1}')"


4.15.0-47-generic



Use brace expansion to keep your boot clear, you can write a command to delete all files in /boot that are not related to the kernel. Remember to exclude the current and two latest kernel images. In the example above, it is


rm -rf /boot/*-4.15.0-{46,50,51,52,54,55}-*


Or move these files in another directory.


mv /boot/*-4.15.0-{46,50,51,52,54,55}-* /media/backup/boot/



Cleanup



apt-get -f install






apt-get autoremove

update-grub

apt-get update