If we want to know which version of PlantUML we are using we can use the command line option
-version. PlantUML will print the version and also some extra information like the machine name, memory and more. But we can also create a PlantUML definition with the command
version and we can transform it to a graphical presentation like a PNG image. This can be handy if we use PlantUML in an environment like Asciidoctor with diagram support and we want to know which version of PlantUML is used.
In our first example we run PlantUML from the command line and use the
$ plantuml -version PlantUML version 8051 (Thu Dec 01 18:52:05 CET 2016) (GPL source distribution) Java Runtime: Java(TM) SE Runtime Environment JVM: Java HotSpot(TM) 64-Bit Server VM Java Version: 1.8.0_112-b16 Operating System: Mac OS X OS Version: 10.12.1 Default Encoding: UTF-8 Language: en Country: US Machine: mrhaki-laptop-2015.fritz.box PLANTUML_LIMIT_SIZE: 4096 Processors: 8 Max Memory: 3,817,865,216 Total Memory: 257,425,408 Free Memory: 249,050,832 Used Memory: 8,374,576 Thread Active Count: 2 The environment variable GRAPHVIZ_DOT has been set to /usr/local/bin/dot Dot executable is /usr/local/bin/dot Dot version: dot - graphviz version 2.38.0 (20140413.2041) Installation seems OK. File generation OK $
In the second example we create a file with the following PlantUML definition:
@startuml version @enduml
When we generate a PNG from this definition we get the following result:
Written with PlantUML 8051.