eclean-kernel

eclean-kernel [options]

eclean-kernel removes old kernels in Gentoo Linux. It cleans up kernel images, modules, and related files while preserving a specified number of recent kernels.
Over time, /boot and /lib/modules accumulate old kernel versions from upgrades, consuming significant disk space. This is particularly problematic on systems with small boot partitions. eclean-kernel automatically identifies and removes old kernel files while protecting the running kernel and a configurable number of recent versions.
The tool handles all kernel-related components including the kernel image, System.map, initramfs, config files, and module directories. It's safer than manual deletion as it understands kernel dependencies and prevents removing essential files.

-l, --list-kernels

List all installed kernels and exit

Keep N newest kernels

Ask before removing each kernel

Remove all kernels unless referenced by bootloader

Destructive mode: remove kernels even when referenced by bootloader

Print kernels to be removed and exit

Bootloader used (auto, lilo, grub2, grub, yaboot, symlinks)

Exclude a specific kernel from removal

Do not update bootloader configuration after removal

Gentoo-specific. Always keep at least one working kernel. The currently running kernel is protected.

eclean(1), emerge(1)