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bcomps - Online in the Cloud

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This is the command bcomps that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



bcomps - biconnected components filter for graphs


bcomps [ -stvx? ] [ -ooutfile ] [ files ]


bcomps decomposes graphs into their biconnected components, printing the components to
standard output.


The following options are supported:

-s No output graph is printed. Implies the -v flag.

-t Print the underlying block-cutvertex tree.

-x Each biconnected component is printed as a separate root graph.

-v Prints number of blocks and cutvertices.

-o outfile
If specified, each root graph will be written to a different file with the names
derived from outfile. In particular, if both -o and -x flags are used, then each
block is written to a different file. If outfile does not have a suffix, the nth
block of the ith graph is written to outfile_n_i. However, the 0th block of the 0th
graph is written to outfile.

If outfile has a suffix, i.e., has the form base.sfx, then the files will have the
same name as above, except appended with .sfx.

The block-cutvertex tree of ith graph is written to outfile_n_T, with an appended
suffix if specified.

By default, each input graph is printed, with each block given as a subgraph whose name is
a concatenation of the name of the input graph, the string "_bcc_" and the number of the


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.


bcomps returns 0 if all the input graphs are biconnected; and non-zero if any graph has
multiple blocks, or any error occurred.

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