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prune(1) General Commands Manual prune(1) NAME prune - Prune directed graphs SYNOPSIS prune [ -n node ] [ -N attrspec ] [ -v ] [ -(h|?) ] [ files ... ] DESCRIPTION prune reads directed graphs in the same format used by dot(1) and re- moves subgraphs rooted at nodes specified on the command line via op- tions. These nodes themselves will not be removed, but can be given at- tributes so that they can be easily located by a graph stream editor such as gvpr(1). prune correctly handles cycles, loops and multi- edges. Both options can appear multiple times on the command line. All sub- graphs rooted at the respective nodes given will then be processed. If a node does not exist, prune will skip it and print a warning message to stderr. If multiple attributes are given, they will be applied to all nodes that have been processed. prune writes the result to the stdout. OPTIONS -n name Specifies name of node to prune. -N attrspec Specifies attribute that will be set (or changed if it exists) for any pruned node. attrspec is a string of the form attr=value. -v Verbose output. -h -? Prints the usage and exits. EXAMPLES An input graph test.gv of the form digraph DG { A -> B; A -> C; B -> D; B -> E; } , processed by the command prune -n B test.gv would produce the following output (the actual code might be formatted in a slightly different way). digraph DG { A -> B; A -> C; } Another input graph test.gv of the form digraph DG { A -> B; A -> C; B -> D; B -> E; C -> E; } (note the additional edge from C to E ), processed by the command prune -n B -N color=red test.gv results in digraph DG { B [color=red]; A -> B; A -> C; C -> E; } Node E has not been removed since its second parent C is not being pruned. EXIT STATUS prune returns 0 on successful completion. It returns 1 if an error oc- curs. SEE ALSO dot(1), gvpr(1) AUTHOR Marcus Harnisch <marcus.harnisch@gmx.net> prune(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | EXIT STATUS | SEE ALSO | AUTHOR
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