sudo -i
wget https://cpan.metacpan.org/authors/id/S/SH/SHLOMIF/Graph-Easy-0.76.tar.gz
tar -xvf Graph-Easy-0.76.tar.gz
cd Graph-Easy-0.76
whereis perl
perl Makefile.PL
make test
make install
graph-easy
echo "[ Bonn ] - car -> [ Berlin ]" | graph-easy
+------+ car +--------+
| Bonn | -----> | Berlin |
+------+ +--------+
echo "[ Bonn ] -> [ Berlin ] [ Berlin ] -> [ Frankfurt ] { border: 1px dotted black; } [ Frankfurt ] -> [ Dresden ] [ Berlin ] ..> [ Potsdam ] [ Potsdam ] => [ Cottbus ]" | graph-easy
+------+ +---------+ ............. +---------+
| Bonn | --> | Berlin | --> : Frankfurt : --> | Dresden |
+------+ +---------+ :...........: +---------+
:
:
v
+---------+ +-----------+
| Potsdam | ==> | Cottbus |
+---------+ +-----------+