Comment lister les "menuentries" de Grub en ligne de commande ?

Un autre one-liner awk qui gère les sous-menus :

 awk -F\' '$1=="menuentry " || $1=="submenu " {print i++ " : " $2}; /\tmenuentry / {print "\t" i-1">"j++ " : " $2};' /boot/grub/grub.cfg

Cela pourrait être une pensée faillible, parce que \t est utilisé pour identifier les entrées de sous-menu.

Dans OpenSuSE, grub2-once fournit l'identifiant du menu que vous pouvez ensuite utiliser dans d'autres commandes. Pas très utile pour les utilisateurs d'Ubuntu cependant.

# grub2-once --list
     0 openSUSE Leap 42.3
     1 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.172-86-default
     2 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.172-86-default (recovery mode)
     3 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.165-81-default
     4 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.165-81-default (recovery mode)
     5 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.159-73-default
     6 Advanced options for openSUSE Leap 42.3>openSUSE Leap 42.3, with Linux 4.4.159-73-default (recovery mode)
     7 openSUSE 42.1 (x86_64) (on /dev/sda8)
     8 Advanced options for openSUSE 42.1 (x86_64) (on /dev/sda8)>openSUSE Leap 42.1 (on /dev/sda8)
     9 Advanced options for openSUSE 42.1 (x86_64) (on /dev/sda8)>openSUSE Leap 42.1, with Linux 4.1.39-56-default (on /dev/sda8)
    10 Advanced options for openSUSE 42.1 (x86_64) (on /dev/sda8)>openSUSE Leap 42.1, with Linux 4.1.39-53-default (on /dev/sda8)
    11 Advanced options for openSUSE 42.1 (x86_64) (on /dev/sda8)>Install 42.3 (on /dev/sda8)