Rmmod
unloads loadable modules from the running kernel.
Rmmod
tries to unload a set of modules from the kernel, with the restriction
that they are not in use and that they are not referred to by other modules.
If more than one module is named on the command line, the modules
will be removed in the given order. This supports unloading of stacked modules.
With the option '-r' a recursive removal of modules will be attempted.
This means that if a top module in a stack is named on the command line,
all modules that are used by this module will be removed as well, if possible.
-a
Remove all unused autocleanable modules.
-r
-s
Output everything to syslog(3) instead of the terminal.