Thanks for your response.
locate graphviz
/home/jay/software/boost_1_49_0/boost/graph/graphviz.hpp
/home/jay/software/boost_1_49_0/boost/graph/detail/read_graphviz_new.hpp
/home/jay/software/boost_1_49_0/boost/graph/detail/read_graphviz_spirit.hpp
/home/jay/software/boost_1_49_0/boost/graph/distributed/graphviz.hpp
/home/jay/software/boost_1_49_0/libs/graph/doc/read_graphviz.html
/home/jay/software/boost_1_49_0/libs/graph/doc/read_graphviz.rst
/home/jay/software/boost_1_49_0/libs/graph/doc/write-graphviz.html
/home/jay/software/boost_1_49_0/libs/graph/example/graphviz.cpp
/home/jay/software/boost_1_49_0/libs/graph/example/graphviz_example.dot
/home/jay/software/boost_1_49_0/libs/graph/example/graphviz_test.dot
/home/jay/software/boost_1_49_0/libs/graph/example/read_graphviz.cpp
/home/jay/software/boost_1_49_0/libs/graph/example/write_graphviz.cpp
/home/jay/software/boost_1_49_0/libs/graph/src/read_graphviz_new.cpp
/home/jay/software/boost_1_49_0/libs/graph/test/graphviz_test.cpp
/usr/include/boost/graph/graphviz.hpp
/usr/include/boost/graph/detail/read_graphviz_new.hpp
/usr/include/boost/graph/detail/read_graphviz_spirit.hpp
/usr/include/boost/graph/distributed/graphviz.hpp
/usr/lib/graphviz
/usr/lib/graphviz/config6
/usr/lib/graphviz/libgvplugin_core.so.6
/usr/lib/graphviz/libgvplugin_core.so.6.0.0
/usr/lib/graphviz/libgvplugin_dot_layout.so.6
/usr/lib/graphviz/libgvplugin_dot_layout.so.6.0.0
/usr/lib/graphviz/libgvplugin_gd.so.6
/usr/lib/graphviz/libgvplugin_gd.so.6.0.0
/usr/lib/graphviz/libgvplugin_neato_layout.so.6
/usr/lib/graphviz/libgvplugin_neato_layout.so.6.0.0
/usr/lib/graphviz/libgvplugin_pango.so.6
/usr/lib/graphviz/libgvplugin_pango.so.6.0.0
/usr/lib/graphviz/libgvplugin_xlib.so.6
/usr/lib/graphviz/libgvplugin_xlib.so.6.0.0
/usr/share/graphviz
/usr/share/doc/graphviz
/usr/share/doc/libgraphviz-perl
/usr/share/doc/graphviz/README.Debian
/usr/share/doc/graphviz/TODO.Debian
/usr/share/doc/graphviz/changelog.Debian.gz
/usr/share/doc/graphviz/copyright
/usr/share/doc/libgraphviz-perl/README.gz
/usr/share/doc/libgraphviz-perl/changelog.Debian.gz
/usr/share/doc/libgraphviz-perl/changelog.gz
/usr/share/doc/libgraphviz-perl/copyright
/usr/share/doc/libgraphviz-perl/examples
/usr/share/doc/libgraphviz-perl/examples/README
/usr/share/doc/libgraphviz-perl/examples/Yapp.output.gz
/usr/share/doc/libgraphviz-perl/examples/dprofpp.graphviz
/usr/share/doc/libgraphviz-perl/examples/
dumper.pl/usr/share/doc/libgraphviz-perl/examples/perly.output.gz
/usr/share/doc/libgraphviz-perl/examples/
port.pl/usr/share/doc/libgraphviz-perl/examples/
primes.pl/usr/share/doc/libgraphviz-perl/examples/
rank.pl/usr/share/doc/libgraphviz-perl/examples/
regex.pl/usr/share/doc/libgraphviz-perl/examples/
remote.pl/usr/share/doc/libgraphviz-perl/examples/
simple.pl/usr/share/doc/libgraphviz-perl/examples/
text.pl/usr/share/doc/libgraphviz-perl/examples/tmon.out.gz
/usr/share/doc/libgraphviz-perl/examples/
xml.pl/usr/share/doc/libgraphviz-perl/examples/
xref.pl/usr/share/doc/libgraphviz-perl/examples/
yacc.pl/usr/share/doc/libgraphviz-perl/examples/
yapp.pl/usr/share/graphviz/lefty
/usr/share/graphviz/lefty/box.lefty
/usr/share/graphviz/lefty/def.lefty
/usr/share/graphviz/lefty/dotty.lefty
/usr/share/graphviz/lefty/dotty_draw.lefty
/usr/share/graphviz/lefty/dotty_edit.lefty
/usr/share/graphviz/lefty/dotty_layout.lefty
/usr/share/graphviz/lefty/dotty_ui.lefty
/usr/share/graphviz/lefty/fractal.lefty
/usr/share/graphviz/lefty/fractal2.lefty
/usr/share/graphviz/lefty/lefty.psp
/usr/share/graphviz/lefty/slides.lefty
/usr/share/graphviz/lefty/tree.lefty
/usr/share/man/man7/graphviz.7.gz
/usr/share/menu/graphviz
/usr/share/mime/text/vnd.graphviz.xml
/var/lib/dpkg/info/graphviz.list
/var/lib/dpkg/info/graphviz.md5sums
/var/lib/dpkg/info/graphviz.postinst
/var/lib/dpkg/info/graphviz.postrm
/var/lib/dpkg/info/libgraphviz-perl.list
/var/lib/dpkg/info/libgraphviz-perl.md5sums