this is obsolete doc -- see http://doc.nethence.com/ instead

Graphviz examples 

Requirements 

On Redhat systems, 

cd /etc/yum.repos.d

wget http://www.graphviz.org/graphviz-rhel.repo

yum list available 'graphviz*'

yum install graphviz

Usage 

Create a folder and a dot file, 

cd ~/

mkdir dot/

cd dot/

vi check.dot

For a directional graph, 

digraph G {

        Director -> "Human Resources";

        Director -> IT;

}

generate the graph, 

dot -Tpng check.dot -o check.png

For a non-directional graph, 

graph G {

        Director -- "Human Resources";

        Director -- IT;

}

Note. use labels, 

graph G {

        D [label="Director"]

        H [label="Human Resources"]

        D -- H;

        D -- IT;

}

References 

http://linuxdevcenter.com/pub/a/linux/2004/05/06/graphviz_dot.html 

http://edutechwiki.unige.ch/en/Graphviz 

http://www.graphviz.org/mywiki/FAQ 

http://www.orient-lodge.com/node/3408 

http://linuxdevcenter.com/pub/a/linux/2004/05/06/graphviz_dot.html?page=2