A command-line tool that helps you to select a different kernel / grub option to boot on your Ubuntu system.
Inspired by questions: Set “older” kernel as default grub entry and How can I get grub2 to boot a different option only on the next boot? on askubuntu.com
I found it's a bit unfriendly to do this manually (especially when you are running without a desktop environment), you will have to grep menuentry from grub.cfg and copy-paste the title or count the index, then change the GRUB file blahblahblah...
This tool utilize the grub-reboot and grub-set-default command to help you to achieve this.
Just download the ZIP archive or the source from https://github.com/Cypresslin/alt_my_grub/, and run it (add --once flag for one-time task mode, which will take you back to the current kernel on the second reboot):
$ /bin/bash alt_my_grub.sh --once
Running in one-time task mode
Available menuentries:
0 Ubuntu
- Advanced options for Ubuntu
2 Ubuntu, with Linux 4.4.0-62-generic
3 Ubuntu, with Linux 4.4.0-62-generic (upstart)
4 Ubuntu, with Linux 4.4.0-62-generic (recovery mode)
5 Ubuntu, with Linux 4.4.0-31-generic
6 Ubuntu, with Linux 4.4.0-31-generic (upstart)
7 Ubuntu, with Linux 4.4.0-31-generic (recovery mode)
8 Memory test (memtest86+)
9 Memory test (memtest86+, serial console 115200)
Please select the desired one [0-9]:
You will see a list of available options, enter the index listed here for your desired option to boot. It will double confirm the option with you.
Please select the desired one [0-9]: 5
Selected: "Advanced options for Ubuntu>Ubuntu, with Linux 4.4.0-31-generic"
===========================================
The following operation needs root access
It will backup /etc/default/grub first, and
make changes to the GRUB_DEFAULT if needed
===========================================
I understand the risk (y/N): y
Setting up one-time task with grub-reboot...
Job done, please reboot now.
And ask you to proceed with root access. Please reboot your system after it's done.
- This script can't handle multiple submenus.
- Set “older” kernel as default grub entry
- How can I get grub2 to boot a different option only on the next boot?
- Extract string from brackets
- Split bash string by newline characters
- How do I test if a variable is a number in bash?
GPLv3