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GC(1)											    GC(1)

       gc - count graph components

       gc [ -necCaDUrsv?  ] [ files ]

       gc  is  a  graph  analogue to wc in that it prints to standard output the number of nodes,
       edges, connected components or clusters contained in the input files.  It  also	prints	a
       total count for all graphs if more than one graph is given.

       The following options are supported:

       -n     Count nodes.

       -e     Count edges.

       -c     Count connected components.

       -C     Count  clusters.	By definition, a cluster is a graph or subgraph whose name begins
	      with "cluster".

       -a     Count all. Equivalent to -encC

       -r     Recursively analyze subgraphs.

       -s     Print no output. Only exit value is important.

       -D     Only analyze directed graphs.

       -U     Only analyze undirected graphs.

       -v     Verbose output.

       -?     Print usage information.

       By default, gc returns the number of nodes and edges.

       The following operand is supported:

       files   Names of files containing 1 or more graphs in dot format.  If no files operand  is
	       specified, the standard input will be used.

       The following exit values are returned:

       0   Successful completion.

       1   The -U or -E option was used, and a graph of the wrong type was encountered.

       Emden R. Gansner <erg@research.att.com>

       wc(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), libgraph(3)

					  21 March 2001 				    GC(1)
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