nop
Check validity and pretty-print graphs in canonical format. tldr-pages
On several platforms
Several platforms
Check validity and pretty-print graphs in canonical format. Graphviz filters: acyclic, bcomps, comps, edgepaint, gvcolor, gvpack, mingle, nop, sccmap, tred, and unflatten.
Pretty-print one or more graphs in canonical format
nop path/to/input1.gv path/to/input2.gv ... >path/to/output.gvIdentifyCheck one or more graphs for validity, producing no output graph
nop -p path/to/input1.gv path/to/input2.gv ...IdentifyDisplay help
nop -?Identify