Change grub parameter

First copy grub file before making changes

 # cp /etc/default/grub /etc/default/grub-`date +%FT%H%M`

Now do required changes in /etc/default/grub

 # vim /etc/default/grub

For Example
 GRUB_TIMEOUT = 40

After making changes compile grub using grub2-mkconfig

 # grub2-mkconfig /boot/grub2/grub.cfg

 # date
    Sun Mar 19 15:39:28 XXX 2023

 # touch te-`date +%FT%H%M`

 # -rw-r--r-- 1 root      root           0 Mar 19 15:39 te-2023-03-19T1539

The topic on Linux - Change grub parameter is posted by - Indhira

Hope you have enjoyed, Linux - Change grub parameterThanks for your time

Tech Bluff