Changed flag (force to ignore a non-existant directory), typo and
swapped arguments are done. Also, the process to stop all processes from
the virtal environment has changed: Now, it stops all potential services
and ignore errors (because a service doesn't exist).
After that, it sends a kill signal to all processes and then gracefully
wait since there is no option to do that with systemd.
Matthias Stecher
3b780c4794