Extract strongly connected components of directed graphs. Graphviz filters:
acyclic,bcomps,comps,edgepaint,gvcolor,gvpack,mingle,nop,sccmap,tred, &unflatten. More information: https://www.graphviz.org/pdf/sccmap.1.pdf.
sccmap -S {{path/to/input1.gv path/to/input2.gv ...}} > {{path/to/output.gv}}
sccmap -v -s {{path/to/input1.gv path/to/input2.gv ...}}
sccmap -?