Dockerized graph-easy
$ docker pull tsub/graph-easy
$ mkdir $HOME/.bin
$ curl -L https://raw.githubusercontent.com/tsub/docker-graph-easy/master/bin/graph-easy -o $HOME/.bin/graph-easy
$ chmod +x $HOME/.bin/graph-easy
$ export PATH=$HOME/.bin:$PATH
$ echo '[a]->[b]' | graph-easy
+---+ +---+
| a | --> | b |
+---+ +---+
$ echo '[a]->[b]' > graph.txt
$ graph-easy graph.txt
+---+ +---+
| a | --> | b |
+---+ +---+
Install with Whalebrew
$ whalebrew install tsub/graph-easy
$ echo '[a]->[b]' | graph-easy
+---+ +---+
| a | --> | b |
+---+ +---+
$ echo '[a]->[b]' > graph.txt
$ graph-easy graph.txt
+---+ +---+
| a | --> | b |
+---+ +---+