github.com/justincormack/cli@v0.0.0-20201215022714-831ebeae9675/man/src/volume/ls.md (about)

     1  Lists all the volumes Docker manages. You can filter using the `-f` or
     2  `--filter` flag. The filtering format is a `key=value` pair. To specify
     3  more than one filter,  pass multiple flags (for example,
     4  `--filter "foo=bar" --filter "bif=baz"`)
     5  
     6  The currently supported filters are:
     7  
     8  * `dangling` (boolean - `true` or `false`, `1` or `0`)
     9  * `driver` (a volume driver's name)
    10  * `label` (`label=<key>` or `label=<key>=<value>`)
    11  * `name` (a volume's name)