A classic, annoy your cow-orkers, while shooting yourself in the foot!
mv /usr/bin '/usr/bin '
What it does
It changes the directory name of
/usr/bin to include a space at the end.
Why it works
/bin is a symbolic link to
/usr/bin' on modern RHEL based systems. Changing
the name of/usr/bin
to/usr/bin␣` will break this symlink. It’s also no
longer in anyone’s path…