Re: [DNG] [OT] Re: Embedded devuan (was Re: Devuan with usr merge?)
Le 18/11/2021 à 03:07, onefang a écrit : > Um, initramfs already uses busybox. Or it can, it's an option in > initramfs-tools. Initramfs can use what you want to provide what is bundled by Debian in binutils and util-linux, + a shell. Busybox provides you with all that, and much more, ready-made. Aboriginal was a distro in which all of these applications was actually provided by busybox - I didn't look recently. The initramfs typically contains a script named /sbin/init, which is the default application launched by the kernel when it has finished booting. If the initramfs is based on busybox, then this script is interpreted by one of the shells provided by busybox (or it could be busybox's init), and all the userspace applications are also provided by busybox. YOU DON'T NEED AN INITRAMFS TO DO THAT. THIS INIT SEQUENCE CAN BE DONE OUT OF A DISK PARTITION IF THE KERNEL IS ABLE TO MOUNT IT. The advantage of such a set up is that you can modify your script from another OS mounting this partition. The application to launch by the kernel is given as an argument to the kernel when invoked by the bootloader (grub, uboot). In case of a bootloader firmware which lacks the possibility to provide arguments to the kernel, it is possible to define the default init when configuring the kernel. Just to experiment with busybox, give to the kernel the argument init="/bin/busybox ash" . After boot, you get the prompt; first invoke 'busybox install'; export PATH='/bin:/sbin:/usr/bin:/usr/sbin' (depending how you have prepared your boot partition and configured your busybox) and then 'mount -t proc proc /proc', and experiment... By default, the kernel will invoke /sbin/init. If you are running out of a partition and not initramfs, you need to invoke 'busybox install' only once and this can be done in advance by chrooting into the partition. There are many possibities ... up to your imagination. -- Didier ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] [OT] Re: Embedded devuan (was Re: Devuan with usr merge?)
On 2021-11-17 19:57:08, Steve Litt wrote: > Florian Zieboll via Dng said on Wed, 17 Nov 2021 23:37:44 +0100 > > >Inspired by earlier mails in the original "usr merge"-thread, an > >experiment I had been thinking of for a sleepless night was installing > >busybox in an initramfs. I suspect Steve facepalming, but be assured: > >This is canceled now. > > I will never, ever, EVER facepalm over somebody doing DIY > experimentation. Now, when you speak of initramfs or of busybox, you > speak with authority. You've taken a step forward from the dwobes > parroting the nonsense mouthed by others in their party. > > I was even hoping that with Busybox inside an initramfs, you'd have > created an "initramfs lite" that's simple to understand, debug and use. > In other words, I was hoping you'd prove me wrong :-). It has > consistently been people doing what you did that caused me to change my > mind. Um, initramfs already uses busybox. Or it can, it's an option in initramfs-tools. -- A big old stinking pile of genius that no one wants coz there are too many silver coated monkeys in the world. ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] [OT] Re: Embedded devuan (was Re: Devuan with usr merge?)
Florian Zieboll via Dng said on Wed, 17 Nov 2021 23:37:44 +0100 >Inspired by earlier mails in the original "usr merge"-thread, an >experiment I had been thinking of for a sleepless night was installing >busybox in an initramfs. I suspect Steve facepalming, but be assured: >This is canceled now. I will never, ever, EVER facepalm over somebody doing DIY experimentation. Now, when you speak of initramfs or of busybox, you speak with authority. You've taken a step forward from the dwobes parroting the nonsense mouthed by others in their party. I was even hoping that with Busybox inside an initramfs, you'd have created an "initramfs lite" that's simple to understand, debug and use. In other words, I was hoping you'd prove me wrong :-). It has consistently been people doing what you did that caused me to change my mind. As long as we're on the subject, for those who are new to Devuan (joined up after maybe June 2015), here's some DIY experimentation I did that enabled me to authoritatively swat aside nonsense from PoetterParrots: http://troubleshooters.com/linux/init/manjaro_experiments.htm SteveT Steve Litt Spring 2021 featured book: Troubleshooting Techniques of the Successful Technologist http://www.troubleshooters.com/techniques ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
[DNG] [OT] Re: Embedded devuan (was Re: Devuan with usr merge?)
Earlier in this thread, on Tue, 16 Nov 2021 09:29:11 +0100 Didier Kryn wrote: > Of course, if you want to install the distro for another > architecture, you must use debootstrap --foreign > > (...) > > Another experiment with great fun is to just install busybox in a > chroot. > > (...) > > musl libc Hello Didier (and all), thank you very much for your elaborate mail and the interesting discussion following it - and sorry for my late reply: I'm kind of absorbed by work and life 'afk' in general. While I am really glad to have found a job in the public sector (field service for Munich's communal schools and nurseries), it's somewhat ironic, that one of my first tasks there was helping to roll back the last remnants of LiMux. The first time ever, that I replaced a Linux with that unutterable gimme-an-inch-OS. A noteworthy detail in this context is, how speedy the network links are getting upgraded now: In some places from slow, but (until now, rofl) sufficiently functional 1 or 2 Mbit/s connections with up to four(!) active workstations attached. Inspired by earlier mails in the original "usr merge"-thread, an experiment I had been thinking of for a sleepless night was installing busybox in an initramfs. I suspect Steve facepalming, but be assured: This is canceled now. Thanks again for all the good input - I'll sure be back with less off topic mails, when I am back to it! Libre Grüße, Florian ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
