How to recreate the missing /etc/default/grub file in Red Hat Enterprise Linux ?

Solution Verified - Updated -

Issue

  • The /etc/default/grub file is missing.
  • The system is up and running, how can one recreate it?

Environment

  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 7
  • GRUB2 Bootloader

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