VAGRANT_HOME

By default, the vagrant home is:

• Mac OS X and Linux: ~/.vagrant.d/boxes
• Windows: C:/Users/USERNAME/.vagrant.d/boxes

You can set up the VAGRANT_HOME environment variable to change its location.

It contains the boxes and can become quit large.

VAGRANT_DEFAULT_PROVIDER

Vagrant allows specifying the default provider to use by setting the VAGRANT_DEFAULT_PROVIDER environmental variable.

For example, to get VMware Fusion as default provider on Linux

export VAGRANT_DEFAULT_PROVIDER=vmware_fusion