Provided by: graphviz_2.36.0-0ubuntu3_amd64
nop - pretty-print graph file
nop [ -p? ] [ files ]
nop reads a stream of graphs and prints each in pretty-printed (canonical) format on stdout. If no files are given, it reads from stdin.
The following options are supported: -p Produce no output - just check the input for valid DOT. -? Print usage information.
If any errors occurred while processing any input, such as a file not found or a file containing illegal DOT, a non-zero exit value is returned. Otherwise, zero is returned.