The main Linux kernel versions comes from the Linux Torvald who is author of Linux kernel, from his git at https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ , we can clone this kernel as, $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git First 5 lines from the top level Makefile in Linux kernel contains information/variables about the Linux kernel versions. $ vim linux/Makefile VERSION = 4 PATCHLEVEL = 9 SUBLEVEL = 45 EXTRAVERSION = NAME = Roaring Lionus In Above, first number “VERSION” denotes the kernel version, “PATCHLEVEL” denotes major revision, “SUBLEVEL” denotes minor revision of Linux kernel. All the latest changes happened in most recent kernel version can be found at https://kernelnewbies.org/LinuxChanges whereas if we want to see what are the changes in 4.9 kernel as compared to 4.8 kernel can be seen at https://kernelnewbies.org/Linux_4.9 You can check the kernel version of your running Linux system using “uname -r” command as, $ uname -r 5.4.0-73-generic

Command line execution

Terminalbash
git at https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ , we can clone this kernel as,  $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  First 5 lines from the top level Makefile in Linux kernel contains information/variables about the Linux kernel versions. $ vim linux/Makefile  VERSION = 4 PATCHLEVEL = 9 SUBLEVEL = 45 EXTRAVERSION = NAME = Roaring Lionus In Above, first number “VERSION” denotes the kernel version, “PATCHLEVEL” denotes major revision, “SUBLEVEL” denotes minor revision of Linux kernel. All the latest changes happened in most recent kernel version can be found at  https://kernelnewbies.org/LinuxChanges  whereas if we want to see what are the changes in 4.9 kernel as compared to 4.8 kernel can be seen at  https://kernelnewbies.org/Linux_4.9 You can check the kernel version of your running Linux system using “uname -r” command as, $ uname -r 5.4.0-73-generic

Gotchas and common issues

  • Permission checks - verify user access rights and sudo privileges before executing system-level operations.

  • Environment configuration - double-check path variables and dependency versions to prevent runtime failures.

  • Backup safeguards - maintain configuration backups before applying system or database modifications.

Following these steps ensures clean configuration and reliable execution for understanding linux kernel version numbering.