rm -rf /usr /lib/nvidia-current/xorg/xorgrm -rf /usr/lib/nvidia-current/xorg/xorgThe example line of code was an actual bug in the Bumblebee NVIDIA driver.
Due to an accidental space, it deleted /usr instead of
just the particular directory.
If you do intend to delete a system directory, such as when working in a chroot or initramfs, you can disable this message with a directive:
# shellcheck disable=SC2114
rm -rf /usr Previous versions of shellcheck, up to and including 0.4.6, would
ignore rm statements containing a -- (an
arbitrary convention). This is no longer the case.
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.