Add UEFI Shell v2 as a boot option

Manipulate the UEFI Boot Manager.
More information: <https://manned.org/efibootmgr>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

sudo efibootmgr -c -d {{/dev/sda1}} -l {{\EFI\tools\Shell.efi}} -L "{{UEFI Shell}}"

click the source code to copy install efibootmgr on any operating system with command-not-found.com