Want to run Shell/Bash commands but are sick and tired of how sickeningly untyped they are? Introducing JavaSH!

helloWorld.java

#!/bin/javash

# Both Bash and Java comments supported (not a feature, I was just too lazy to force one or the other)

// Some basic commands are included
echo("Hello world!");

// Others, you have to manually run
String currentDir = run("pwd");
echo(currentDir);

/* Note that you also have full access the Java libraries! */

// Alternatively, modules allow for adding "typed" commands like these
git.init();

file.touch("log");
file.chmod("777", "log");

Date date = new Date();
file.append("log", "Logged in " + date.toString());
git.add("log");

echo(git.status());

git.commit("Updated log file");

So long as you have javac installed, the library allows for the execution of code directly from the terminal (debating whether to use .javash extension to avoid confusion):

 $ ./helloWorld.java

Or

 $ javash helloWorld.java