Prints one entry of a Redis Stream to stdout, randomly or user-defined.
rsone <stream> [<key>] [<field>]
If no key is defined an entry is randomly chosen. If no field is defined all fields and values are printed.
First the location of a value is printed to stderr (stream, key, and field) then the value to stdout.
rsone foo | jq
# foo 123 bar
# {
# "baz": 42
# }