Merge pull request cheat#42 from grumpyf0x48/master

Add cheatsheet for jbang

jbang

@@ -0,0 +1,50 @@
+# Create a new command line application using Picocli
+jbang init --template=cli CmdLineApp.java
+
+# Edit application with Visual Studio Code
+jbang edit --open=code CmdLineApp.java
+
+# Edit application with IDEA and have the project regenerated on dependencies changes
+jbang edit --live --open=idea CmdLineApp.java
+
+# Rebuild application in cache without starting it
+jbang build CmdLineApp.java
+
+# Run command line application with jbang
+jbang CmdLineApp.java command arg1 arg2...
+
+# Run command line as a script
+./CmdLineApp.java command arg1 arg2...
+
+# Run a Java code snippet (Java 9 and later)
+echo 'Files.list(Paths.get("/etc")).forEach(System.out::println);' | jbang -
+
+# Debug
+jbang --debug CmdLineApp.java command arg1
+# Then start debugger in IDEA once port is printed
+
+# Run a script from the network
+jbang https://github.com/jbangdev/jbang-catalog/blob/master/hello.java
+
+# Run a jbang script referenced in a catalog
+# Where hello.java is located in jbang-catalog repository of GitHub jbangdev user
+jbang hello@jbangdev
+
+# Run a jar file from its GAV
+jbang io.swagger:swagger-codegen-cli:RELEASE --help
+
+# Install JDK 14 to be used with jbang
+jbang jdk install 14
+
+# Force usage of JDK 14 in a jbang script
+## Add //JAVA 14 to the first lines of the script
+## Then start it using jbang
+
+# List jbang installed JDK
+jbang jdk list
+
+# Clear jbang cache
+jbang cache clear
+
+# Install auto-completion script for Bash
+jbang completion | sudo tee /etc/bash_completion.d/jbang