3.4.3. Rows Option

Any command that has a “-r / –rows” option expects it’s input to be from another commands output. Showing sources

You can view the commands that can supply input to a command with a “-r / –rows” option by using the “-ss / –show-sources” option. Piped input

If “-r / –rows” is supplied as “-” (the default) the input is expected to be piped in from STDIN. File input

If “-r / –rows” is anything other than “-”, it must be the path to a JSON file containing the output of one of the source commands.