GC(1) General Commands Manual 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:

Count nodes.
Count edges.
Count connected components.
Count clusters. By definition, a cluster is a graph or subgraph whose name begins with "cluster".
Count all. Equivalent to -encC
Recursively analyze subgraphs.
Print no output. Only exit value is important.
Only analyze directed graphs.
Only analyze undirected graphs.
Verbose output.
-?
Print usage information.

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

The following operand is supported:

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