NAME

       botch-graph-sources - find all sources (vertices without predecessors) in a graph in
       GraphML or dot format

SYNOPSIS

       botch-graph-sources [options] [ingraph] [outgraph]

DESCRIPTION

       Extract the subgraph of all sources (vertices without predecessors) in the input graph.

       If either (or both) of the positional arguments is/are omitted, then read GraphML or dot
       from standard input and/or write GraphML or dot to standard output, respectively.  Passing
       a '-' as either argument, explicitly specifies to read the input from standard input and
       write the output to standard output, respectively.

       The input graph type will be determined automatically. If the output graph is given as a
       filename, then the output type will be GraphML if the filename ends with .xml and dot if
       the filename ends with .dot. If the output is done on standard output then it will happen
       in the same format as the input graph.

OPTIONS

       -h, --help
           Display help.

       -v, --verbose
           Be verbose.

EXAMPLE

       Find all source packages that build depend on "texlive-binaries:amd64
       (=2015.20150524.37493-5)".

       Using package selection and reverse dependency cone computation by ceve:

               dose-ceve -r "texlive-binaries:amd64 (= 2015.20150524.37493-5)" --deb-native-arch=amd64 -G pkg -T grml deb://Packages debsrc://Sources \
                       | botch-graph-sources - - \
                       | botch-graph2text - "{realpackage} (= {realversion})" --vertex type:src \
                       | sort

       Using package selection and ancestor vertex computation by botch:

               dose-ceve --deb-native-arch=amd64 -G pkg -T grml deb://Packages debsrc://Sources \
                       | botch-graph-ancestors - - --target realpackage:texlive-binaries:amd64 realversion:2015.20150524.37493-5 \
                       | botch-graph-sources - - \
                       | botch-graph2text - "{realpackage} (= {realversion})" --vertex type:src \
                       | sort

BUGS

       See <http://bugs.debian.org/botch>.

SEE ALSO

       Debian doc-base Manual /usr/share/doc/botch/wiki/Home.html

AUTHOR

       This man page was written by Johannes Schauer. Botch is written by Johannes Schauer and
       Pietro Abate.

COPYRIGHT

       Copyright 2012-2014 Johannes Schauer, Pietro Abate

       This program is free software: you can redistribute it and/or modify it under the terms of
       the GNU Lesser General Public License as published by the Free Software Foundation, either
       version 3 of the License, or (at your option) any later version. A special linking
       exception to the GNU Lesser General Public License applies to this library, see the
       COPYING file for more information.