Get your name in the kernel! Kernels Add comments May 202001 Get your name in the kernel! 2 Responses to “Get your name in the kernel!” Greg Prosser says: October 28, 2001 at 7:10 pm I figured I’d give you more info on the username/etc on the compile for the kernel, like you were saying. First of all, there is more than one place where your user@host like when you build a kernel. Several apps built when you rebuild the world (named for example, check out named -v) tag on your username and hostname, along with the date, for future reference. Also, the IRC client EPIC does the same thing, at startup it will echo back ‘Compiled by ..’, and will show you the user@host it was compiled at. So what does this all mean? It’s quite simple actually. The compiles can detect these things by various means, for example, a kernel build checks out its working directory. So whether you use make buildkernel, which uses the /usr/obj staging area, or the regular process, which uses /sys/compile staging area, you’ll see that. ‘su’ by itself is akin to ‘su -m’ (if you read the manual pages), as is ‘su -‘ equal to ‘su -l’. The -m option to su invokes your current shell, instead of the target users, and leaves most of the environment intact (including the USER variable used during compiles), whereas -l simulates a new login, calling the target users shell, and discarding or resetting certain environment variables for the new shell. Normally, when running around as a normal user, I’ll use my ‘xyst’ login (although recently I’ve been using gregp for similar purposes), when I make the world, or a kernel for that matter, I’ll usually use ‘su – gregp’ to go back to my gregp login (simulating its environment conditions) and then use ‘su’, so that it’s name gets put on the kernel. It’s all about the environment. Hope that helps. Log in to Reply Mike Raymer says: October 28, 2001 at 7:11 pm (posted by Dan Langille) In your article, you talked about how to get your name in your kernel when performing a uname -a. I’ve played around with this as well and in fact, you can change quite a bit of the text. You just need to edit the right file prior to compiling your kernel. After editing my kernel file, named KERNEL, and doing the config KERNEL, change directory to ../../compile/KERNEL. Once there, use vi, or your editor of choice, and make your changes to the file vers.c You can edit the name (as you were doing), the version number and even the OS name (why would anyone want to hide the fact they run the best operating system available?). Then proceed with the remainder of compiling your kernel, make depend && make && make install. Anyway, thought this might tie into your article and allow you to customize some aspects of the system output. If I’m mistaken in what you were attempting to do, then I apologize for not reading the article thoroughly Log in to Reply Leave a Reply Cancel replyYou must be logged in to post a comment.