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Removing old kernels from Ubuntu

Something I like in Fedora is that old kernels get purged every 3 new kernels (when you have 3 kernel versions installed, installing a new one will kick the old one out). In Ubuntu, they seem to be just stacking endlessly. There is however a simple way to delete them (cleanly): they can be uninstalled from the package manager.
First, you’ll want to check the current kernel version you’re running (don’t uninstall that one, obviously): in the console, type uname -r. Then go to the package manager and search for linux-image. At some point, you’ll find a bunch of packages like “linux-image-2.6.35-27-generic”. Simply mark the ones you don’t want anymore for removal, apply, and you’re done. Note that this process is worth doing, as removing 4 kernel versions freed me around 550 MiB of disk space…
A final note for console fans: from the command line, the uninstallation command looks like:

sudo apt-get remove –purge linux-image-2.6.35-27-*

(once again, make sure you don’t remove the version you’re currently using)

Posted in Linux.

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