https://wiki.debian.org/GrubReboot
https://unix.stackexchange.com/questions/43196
aka@aka-linux:~$ sudo awk -F\'\|\" '/(submenu|menuentry) / { printf "%s\t%s\n", $1, $2}' /boot/grub/grub.cfg
menuentry Kubuntu GNU/Linux
submenu Advanced options for Kubuntu GNU/Linux
menuentry Kubuntu GNU/Linux, with Linux 6.17.0-8-generic
menuentry Kubuntu GNU/Linux, with Linux 6.17.0-8-generic (recovery mode)
menuentry Kubuntu GNU/Linux, with Linux 6.17.0-5-generic
menuentry Kubuntu GNU/Linux, with Linux 6.17.0-5-generic (recovery mode)
menuentry Memory test (memtest86+x64.efi)
menuentry Memory test (memtest86+x64.efi, serial console)
menuentry Memory test (memtest86+ia32.efi)
menuentry Memory test (memtest86+ia32.efi, serial console)
menuentry Memory test (memtest86+x64.bin)
menuentry Memory test (memtest86+x64.bin, serial console)
menuentry Memory test (memtest86+ia32.bin)
menuentry Memory test (memtest86+ia32.bin, serial console)
menuentry Windows Boot Manager (on /dev/nvme1n1p1)
menuentry UEFI Firmware Settings
aka@aka-linux:~$ sudo grub-editenv - list
next_entry=
aka@aka-linux:~$ sudo grub-reboot 2
aka@aka-linux:~$ sudo grub-editenv - list
next_entry=2
aka@aka-linux:~$ sudo reboot
aka@aka-linux:~$ Connection to 192.168.31.59 closed by remote host.
Connection to 192.168.31.59 closed.
lyq@debian:~/bin$ ssh aka@192.168.31.59
ssh: connect to host 192.168.31.59 port 22: No route to host
