23 Feb. 2021

Finding And Deleting Old Kernels

In Ubuntu, you will some time find fallback kernels in /boot. These are some time annoying specially when you do not have something else to do. I'm using ubuntu server for my web projects, I updated it, to my my surprise there were about four versions of kernel were present. Yes you can certainly delete them by issuing command but why so easy. Why not use just one command and you will get only two, one for main use and other one for fallback. So any time you got more than two use this command.

dpkg --list | grep linux-image | awk '{ print $2 }' | sort -V | sed -n '/'`uname -r`'/q;p' \

| sed -n '/linux-image second last/q' | xargs sudo apt-get -y purge

But do not forgot to update your grub after this.