root@runtime:/home/vagrant#
root@runtime:/home/vagrant# apt-get install grub-common
Reading package lists... Done
Building dependency tree
Reading state information... Done
grub-common is already the newest version (2.02~beta3-4ubuntu2.2).
0 upgraded, 0 newly installed, 0 to remove and 141 not upgraded.
root@runtime:/home/vagrant# grub2-editenv list
No command 'grub2-editenv' found, did you mean:
 Command 'grub-editenv' from package 'grub-common' (main)
grub2-editenv: command not found
root@runtime:/home/vagrant# grub2-editenv list^C
root@runtime:/home/vagrant# grub-editenv
You need to specify at least one command.
Usage: grub-editenv [OPTION...] FILENAME COMMAND
Try 'grub-editenv --help' or 'grub-editenv --usage' for more information.
root@runtime:/home/vagrant# grub-editenv  list
saved_entry=3
root@runtime:/home/vagrant# awk -F\' '/menuentry / {print $2}' /boot/grub/grub.cfg
Ubuntu
Ubuntu, with Linux 4.10.0-38-generic
Ubuntu, with Linux 4.10.0-38-generic (recovery mode)
Ubuntu, with Linux 4.10.0-19-generic
Ubuntu, with Linux 4.10.0-19-generic (recovery mode)
Ubuntu, with Linux 4.9.68-040968-generic
Ubuntu, with Linux 4.9.68-040968-generic (recovery mode)
root@runtime:/home/vagrant# grub-editenv  list^C
root@runtime:/home/vagrant# uname -a
Linux runtime 4.10.0-38-generic #42-Ubuntu SMP Tue Oct 10 13:24:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
root@runtime:/home/vagrant# awk -F\' '/menuentry / {print $2}' /boot/grub/grub.cfg
Ubuntu
Ubuntu, with Linux 4.10.0-38-generic
Ubuntu, with Linux 4.10.0-38-generic (recovery mode)
Ubuntu, with Linux 4.10.0-19-generic
Ubuntu, with Linux 4.10.0-19-generic (recovery mode)
Ubuntu, with Linux 4.9.68-040968-generic
Ubuntu, with Linux 4.9.68-040968-generic (recovery mode)
root@runtime:/home/vagrant# grub-editenv  list
saved_entry=3
root@runtime:/home/vagrant# apt-get install grub-commongrub2-set-default 'Fedora Linux, with Linux 3.1.2-1.fc16.x86_64'^C
root@runtime:/home/vagrant# grub-set-default 'Fedora Linux, with Linux 3.1.2-1.fc16.x86_64'
Searching for GRUB installation directory ... found: /boot/grub
root@runtime:/home/vagrant# grub-set-default 'Fedora Linux, with Linux 3.1.2-1.fc16.x86_64^C
root@runtime:/home/vagrant# vim /boot/
abi-4.10.0-19-generic             config-4.10.0-19-generic          grub/                             initrd.img-4.9.68-040968-generic  System.map-4.9.68-040968-generic  vmlinuz-4.9.68-040968-generic
abi-4.10.0-38-generic             config-4.10.0-38-generic          initrd.img-4.10.0-19-generic      System.map-4.10.0-19-generic      vmlinuz-4.10.0-19-generic
abi-4.9.68-040968-generic         config-4.9.68-040968-generic      initrd.img-4.10.0-38-generic      System.map-4.10.0-38-generic      vmlinuz-4.10.0-38-generic
root@runtime:/home/vagrant# vim /boot/grub/
default           fonts/            gfxblacklist.txt  grub.cfg          grubenv           i386-pc/          locale/           menu.lst          menu.lst~         unicode.pf2
root@runtime:/home/vagrant# vim /boot/grub/menu.lst
root@runtime:/home/vagrant# ^C
root@runtime:/home/vagrant# grub-editenv  list
saved_entry=Fedora Linux, with Linux 3.1.2-1.fc16.x86_64
root@runtime:/home/vagrant#