February 2020
Intermediate to advanced
666 pages
15h 45m
English
Content preview from Mastering Linux Security and Hardening - Second Edition
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Disabling the submenu for Ubuntu
Theoretically, you can disable the Ubuntu submenu by placing GRUB_DISABLE_SUBMENU=true in the /etc/default/grub file and then running sudo update-grub. However, I couldn't get that to work, and according to the results of my DuckDuckGo searches, neither can anyone else. So, we'll manually edit the /boot/grub/grub.cfg file to fix that.
Look for the submenu line that appears just after the first menuentry item. It should look like this:
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-f0f002e8-16b2-45a1-bebc-41e518ab9497' {
Comment out that line to make it look like this:
# submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-f0f002e8-16b2-45a1-bebc-41e518ab9497' ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.