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--- how_to_delete_old_unused_kernels [2022/06/12 09:32] – dino
+++ how_to_delete_old_unused_kernels [2024/03/12 21:23] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 To find out the current version of Linux kernel running on your system, use the following command.
-<code>$ uname -sr</code>
+<code>$ uname -sr
-**//Linux 4.12.0-041200-generic//**
+Linux 4.12.0-041200-generic
+</code>
 To list all installed kernels on your system, issue this command.
-<code>$ dpkg -l | grep linux-image | awk '{print$2}'</code>
+<code>$ dpkg -l | grep linux-image | awk '{print$2}'
+linux-image-4.12.0-041200-generic
+linux-image-4.8.0-22-generic
+linux-image-extra-4.8.0-22-generic
+linux-image-generic
+</code>
-**//linux-image-4.12.0-041200-generic\\
-linux-image-4.8.0-22-generic\\
-linux-image-extra-4.8.0-22-generic\\
-linux-image-generic//**
 Run the commands below to remove a particular linux-image along with its configuration files, then update grub2 configuration, and lastly reboot the system.
@@ Line 20: / Line 23: @@
 $ sudo reboot</code>
-And that's it. However, Although this method works just fine, it is more reliable and efficient to use a handy script called “byobu” that combines all the commands above into a single program with useful options such as specifying number of kernels to keep on the system.
+And that's it.
-Install byobu script package which provides a program called purge-old-kernels used for removing old kernels and header packages from the system.
-<code>$ sudo apt install byobu</code>
-Then remove old kernels like so (the command below allows 2 kernels to be kept on the system).
-<code>$ sudo purge-old-kernels --keep 2</code>