rm -rf /usr /lib/nvidia-current/xorg/xorg
/usr is the second major section of the filesystem. /usr is shareable, read-only data. That means that /usr should be shareable between various FHS-compliant hosts and must not be written to. Any information that is host-specific or varies with time is stored elsewhere.
Large software packages must not use a direct subdirectory under the /usr hierarchy.
rm -rf .*
In particular, in our own version of the system, there is a directory "/usr" which contains all user's directories, and which is stored on a relatively large, but slow moving head disk, while the othe files are on the fast but small fixed-head disk.
ls -R .*
$ rm -rf .
$ find .
If either of the files dot or dot-dot are specified as the basename portion of an operand (that is, the final pathname component), rm will write a diagnostic message to standard error and do nothing more with such operands.
- Single UNIX Specification, Version 2: rm command
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