Hogyan lehet törölni a régi kernel az Ubuntu

How to delete old Kernels in Ubuntu; Remove old Kernels in Ubuntu Linux. Az Ubuntu, first list the installed Kernels and then remove old Kernels via CLI/Terminal.

Remove Leftover Temp Files

Run the following command to delete leftover temporary files.

sudo rm -rv ${TMPDIR:-/var/tmp}/mkinitramfs-*

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Find out the current version of Linux kernel being used on the system and then list all installed kernels on the said system. Erre, run the following set of commands:

$ uname -sr
$ dpkg -l | grep linux-image | awk '{print$2}'

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Run the following command to list all the kernels excluding the booted kernel in the package database, and their status.

dpkg -l | tail -n +6 | grep -E 'linux-image-[0-9]+' | grep -Fv $(uname -r)

Remove Old Kernels

Once the Kernel to be removed is identified, run the following commands. For the example, we will remove Linux Kernel 4.2.0-15:


sudo update-initramfs -d -k 4.2.0-15-generic
sudo dpkg --purge linux-image-4.2.0-15-generic linux-image-extra-4.2.0-15-generic
sudo dpkg --purge linux-headers-4.2.0-15-generic
sudo dpkg --purge linux-headers-4.2.0-15
sudo apt-get -f install
$ sudo update-grub2
$ sudo reboot

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