It is primarily designed to be used from scripts which install new kernels and need to find information about the current boot environment.It is used for updating and displaying information about the configuration files for various architecture specific bootloaders.grubby is a command line tool used to configure bootloader menu entries across multiple architectures.
Hence now we have a special designated tool called grubby to change default kernel versions The steps involved with RHEL/CentOS 8 are completely different compared to older releases as GRUB2 has been further upgraded to what we had with RHEL/CentOS 7. switch between different installed kernel versions in RHEL/CentOS 8. In this tutorial we will learn the steps to change default kernel version i.e.
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