When using pty=true, removing files using sudo may request confirmation,
which will hang the connection.
Similarly, sometimes assumptions about file existence may be wrong and
in those cases it seems better to continue on as long as the file does
not exist, so -f makes sense there, too.
- It's not clear whether it's possible to mount individual shares
using 'mount -t vmhgfs', as the vagrant-vmware-fusion provider now does
for Linux guests. Any mount from '.host', even if not a valid share
name, succeeds and mounts _all_ shares in their respective directories
at the root of the mountpoint. Instead, we symlink each directory from
its place in '/Volumes/VMware Shared Folders'