Find your kernel file in /boot and determine what kernel version you are currently running.
- [Voiceover] So let's look at a kernel. If we go to the boot directory and we do a list, we see a bunch of stuff, including some vmlinuz files, in particular, the one we're interested in is the vmlinuz-3.10. If we check the kernel version we're on, we see it matches the kernel version we're running, that's that uname command there. Let's look at the size of the file. How big is that? Just over 5 meg, not so big, but that's it. Now it's compressed, it would be a little bit bigger in memory, but that's the key file.
That grub is going to load into memory. Don't delete that file. You need that file. You could delete it right, and everything would be fine, but when you try to reboot, it wouldn't be there, and you'd be in trouble.
We survey the Linux kernel specification, boot process, and loadable kernel modules. You will practice techniques such as downloading and searching Linux kernel source code and configuring a Linux kernel from scratch. Challenge and solution videos at the end of almost every chapter allow you to test your new Linux skills along the way.
- What is the Linux kernel?
- Controlling hardware
- Reading Linux kernel messages
- Reading and writing files from the proc and sysfs filesystems
- Configuring GRUB
- Using kernel command-line parameters
- Configuring run levels
- Working with loadable kernel modules (LKMs)
- Searching the kernel source code
- Building and installing a Linux kernel
Skill Level Advanced
1. Surveying the Linux Kernel
3. Working with Loadable Kernel Modules
4. Examining Linux Kernel Source Code
5. Configuring and Building a Linux Kernel
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