Today I accidently made a (yes, very stupid) typo in a root console:
rm -r /
I noticed the typo almost directly, but rm managed to wipe out my /bin and started removing parts of /boot. This situation wasn’t very helpful for the stability of my system, as you might understand.
For the windows user: it’s a bit like deleting half of all executables in the windows folder.
One key difference: when running linux, you can fix it easily. I booted a livecd, mounted my system, copied the /bin from a stage3 tarball to my root partition and rebooted.
And it’s working again! There were some complaints about a libproc version mismatch with the binaries, but that’ll be easily solved by a emerge -e system.
You just got to love linux. (and other nixes for that matter)