File Program issue in c

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LEARN ABOUT SUSE

prune

prune(1)						      General Commands Manual							  prune(1)

NAME

       prune - Prune directed graphs

SYNOPSIS

       prune [ -n node ] [ -N attrspec ] [ files ...  ]

DESCRIPTION

       prune  reads  directed  graphs  in  the	same format used by dot(1) and removes subgraphs rooted at nodes specified on the command line via
       options. These nodes themselves will not be removed, but can be given attributes so that they can be easily located by a graph stream  edi-
       tor such as gvpr(1).  prune correctly handles cycles, loops and multi-edges.

       Both options can appear multiple times on the command line. All subgraphs 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.

EXAMPLES

       An input graph test.dot of the form

	    digraph DG {
	      A -> B;
	      A -> C;

	      B -> D;
	      B -> E;
	    }

       , processed by the command

	    prune -n B test.dot

       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.dot 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.dot

       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 occurs.

SEE ALSO

       dot(1), gvpr(1)

AUTHOR

       Marcus Harnisch <marcus.harnisch@gmx.net>

																	  prune(1)

Programming