Download kernel source files

Just getting the current kernel sources. Add a comment. Active Oldest Votes. One can find version using command: freebsd-version -k The minor versions should be ignored to fetch from the above URL.

Improve this answer. VanagaS 6 6 silver badges 6 6 bronze badges. Delgado J. Delgado 4 4 silver badges 7 7 bronze badges. This is the right answer.

Works with FreeBSD To suppress output, pass the -q quiet flag. See the Repo Command Reference for all options. By default, access to the Android source code is anonymous. To protect the servers against excessive use, each IP address is associated with a quota.

When sharing an IP address with other users for example, when accessing the source repositories from beyond a NAT firewall , the quotas can trigger even for regular use patterns for example, if many users sync new clients from the same IP address within a short period. In that case, you can use authenticated access, which then uses a separate quota for each user, regardless of the IP address. First, create a password with the password generator and follow the instructions on the password generator page.

You can convert an existing client to use mandatory authentication with the following command:. When downloading from behind a proxy which is common in some corporate environments , you might need to to explicitly specify the proxy for Repo to use:.

More rarely, Linux clients experience connectivity issues, getting stuck in the middle of downloads typically during receiving objects. You must have root access to modify the TCP setting:. When using several clients, especially in situations where bandwidth is scarce, it's better to create a local mirror of the entire server content, and to sync clients from that mirror which requires no network access.

The download for a full mirror is smaller than the download of two clients, and it contains more information. We can look at the history since Linux A graphical version of the history is given by gitk. Do a cd into the top source directory with arch , Documentation , etc. There is a number of configuration targets, like xconfig , menuconfig , oldconfig. Pick one and specify what kind of a kernel you want. What hardware must be supported, what filesystem types, etc.

If you are greedy and make a big kernel, you cannot boot from floppy. If you are very greedy, you may not be able to boot at all, so asking for "everything" may be counterproductive. The target oldconfig means "the same as last time", and uses the file.

When starting from scratch it may take a number of attempts before you have a kernel that boots and supports your hardware. Recent kernels may require recent compiler or binutils to compile, and recent utilities to use. Probably you use some boot loader, like lilo or grub. Or perhaps you want to boot from a floppy.

For a bootfloppy, dd this file to an empty diskette. Grub allows you a menu with possible kernels to boot. That is nice. Lilo has a much better feature: lilo -R allows you to set the kernel to boot into for the next time only. So, for kernel development lilo is easier than grub: make a new kernel, try a boot, probably something will fail, and the next reboot is into the good old solid kernel again.

On the other hand, lilo has a disadvantage: you must rerun lilo after installing a new kernel, and very obscure things will happen if you forget. Never delete your old kernel. Maybe the new one doesn't work. And if you use Appletalk only once a month, and Appletalk doesn't work in the new kernel, it'll take a month before you notice. If the boot crashes very early, say, after Uncompressing Linux Ok, booting the kernel. If the processor type was chosen correctly, check whether things go better with fewer options selected.

A too big kernel will crash. If the crash comes later, then hopefully the boot messages give some indication of what point in the boot process was reached when things went wrong. A common mistake is to want to have as many modules as possible. If the driver needed to access disk or partition, or filesystem for the root filesystem is a module, then it must be loaded before it can be loaded from disk, and that is impossible.

The typical reaction is the panic Kernel panic: VFS: Unable to mount root from where the hex numbers indicate the device. It is possible to load kernel code at run time without rebooting. Most hardware and filesystem drivers exist as module, and the commands lsmod , insmod , rmmod allow you to manipulate them. Normally life is easier if you just compile all you need into the kernel, but when developing a new driver it is very useful to be able to insmod the latest version, try it, rmmod again, edit and compile the driver, and repeat.

There is a kernel module loader that, when enabled, will find and load modules automatically when needed. Since modules come from disk, the code required to find them disk driver, filesystem driver cannot itself be a module. The command make modules compiles the modules. Now after compilation an insmod demo-module. Where are these messages?

Wherever you are sending kernel output. Recent messages are also visible in the output of the dmesg command. Written like this, the module will work both when compiled into the kernel, and when inserted as a separate module.

This process is needlessly complicated. I've tried googling for it but I keep finding packages that are a few kilobytes only. Any tips? This is the only option on this page that worked for Ubuntu Just pick one from: sudo apt install linux-source downloads into system directory sudo apt source linux-source downloads into working directory If you're told to give some 'sources' URLs in your sources.

Remarks: Use modern tools; avoid apt-get. These commands download the source code for your current kernel in my case 4. Tim Tim 1 1 silver badge 4 4 bronze badges. Doesn't work for me but neither does the apt-get version. I'm running Ubuntu It says, "You must put some 'source' URIs in your sources.

I have no idea how to do that. AndrewBainbridge I added info about that. Is that OK for you now? Yes thanks. It was a stupid comment from me. I only needed to google the error message. Anyway, have an upvote for your effort.

Sign up or log in Sign up using Google. Sign up using Facebook. What this means is that your Linux distro will not have the latest branch of Kernel sources 5. In this example today, my CentOS 7.