vmupdate is a command line utility used to keep your virtual machines up to date. It searches your computer for virtualizers, queries them for a list of VM's, and runs the appropriate update commands.
Read the docs for more details.
The recommended installation tool is pip:
$ pip install vmupdate
Create a vmupdate.yml file with the credentials to login to your virtual machines:
Credentials:
Username: myuser
Password: mypass
And pass that file to the utility:
$ vmupdate --config "/path/to/config/vmupdate.yaml"
Note: This method is included for simplicity, but is not recommended due to the inherent insecurity of a plaintext password. Read the Configuration documentation for more options.