For Vue CLI v3, you can use vue create or vue ui to bootstrap an app. For Vue CLI v2, you use vue init.
If you have Vue CLI v3 installed, you can still use vue init, though it's considered a legacy API:
$ vue --version
3.0.0
$ vue init
  Usage: init [options] <template> <app-name>
  generate a project from a remote template (legacy API, requires @vue/cli-init)
  Options:
    -c, --clone  Use git clone when fetching remote template
    --offline    Use cached template
    -h, --help   output usage information
$ vue create
  Usage: create [options] <app-name>
  create a new project powered by vue-cli-service
  Options:
    -p, --preset <presetName>       Skip prompts and use saved or remote preset
    -d, --default                   Skip prompts and use default preset
    -i, --inlinePreset <json>       Skip prompts and use inline JSON string as preset
    -m, --packageManager <command>  Use specified npm client when installing dependencies
    -r, --registry <url>            Use specified npm registry when installing dependencies (only for npm)
    -g, --git [message]             Force git initialization with initial commit message
    -n, --no-git                    Skip git initialization
    -f, --force                     Overwrite target directory if it exists
    -c, --clone                     Use git clone when fetching remote preset
    -x, --proxy                     Use specified proxy when creating project
    -b, --bare                      Scaffold project without beginner instructions
    -h, --help                      output usage information
Vue CLI is stable at version 3, so I would make sure you have that installed, and use the vue create command or the vue ui command. The vue ui is still in beta and I have not yet tried it, but it looks nice. You can go through the CLI website for more information: https://cli.vuejs.org/.