Euca2ools do not include a “euca” command, but adding this command with an alias seems more idiomatic than requesting automatic aliases for the 300+ commands included with the snap.
So, we can consider the simple ‘euca’ alias, but the alias mechanism is intended to allow idiomatic use of the snap’s commands as opposed to the ‘idiomatic use of the snap alias’. Put another way, if the command names in the eucalyptus-tools are what people expect, I suggest you request aliases for them.
Please specify if you’d actually prefer to use ‘euca’, have everything aliased or a subset. For convenience, here is the current list from the latest snap: