On 2019-08-29 10:53, Jonathan Billings wrote:
On Thu, Aug 29, 2019 at 10:25:50AM -0500, Valeri Galtsev wrote:
root@point:/home/valeri # cd root@point:~ # whoami root root@point:~ # rm -rf / rm: "/" may not be removed
Somebody is really clever in this World ;-) Well, FreeBSD folks made my day (again!). Note, that that I did on my live workstation (yes, I did test it on throw-away system first ;-) - so I can copy and paste what I got to this email.
GNU coreutils also has that feature, you can't run 'rm -rf /' there either, you need to run it with --no-preserve-root. This was added to Coreutils in 2003. Be careful in FreeBSD, if you have POSIXLY_CORRECT defined, it will let you rm -rf /.
Yes, I know... and I'm far from "admiring foolproofness" of which there is none... as [on FreeBSD]
rm -rf /*
does remove everything but "immutable" files, directories,... You can not make anything fool proof (unless it is android that is actually not owned by that fool no matter that the fool thinks it does ;-)
Valeri