Installing Kotlin securely, with package signatures, auto-update etc

I don't know about umake. I've just written a little bash script to generate a minimal deb package out of the distributed zip archive.

Create a new kotlinc-deb file:

#!/usr/bin/env bash
if [ -z "$1" ]; then echo "Error: no input zip file is specified"; exit 1; fi
version=${1#kotlin-compiler-}
version=${version%.zip}
unzip $1 -d kotlinc_${version}_all/
cd kotlinc_${version}_all/
mkdir -v opt
mv -v kotlinc opt/
rm -rv 'opt/kotlinc/bin/'*.bat
mkdir -vp usr/{bin,share/doc}
mv -v opt/kotlinc/license usr/share/doc/kotlinc
sed -i $'s/\r$//' 'opt/kotlinc/bin/'* #The new 1.2.0 version has shell scripts in
                                      # CRLF format. That causes issues when running
                                      # them. So I added this CRLF to LF conversion
cd usr/bin
ln -svt . '../../opt/kotlinc/bin/'*
cd ../..
mkdir -v DEBIAN
cat >DEBIAN/control <<EOF
Package: kotlinc
Version: ${version}
Section: java
Priority: optional
Maintainer: ${LOGNAME} <${LOGNAME}@localhost>
Architecture: all
Description: The Kotlin compiler
 The compiler for the Kotlin programming language.
EOF
dpkg-deb -b ../kotlinc_${version}_all{,.deb}

And then run:

$ chmod +x kotlinc-deb
$ ./kotlinc-deb kotlin-compiler-1.1.51.zip

After that, you can install the generated kotlinc_1.1.51_all.deb as a usual deb package.

The command line Kotlin compiler developed by JetBrains can be installed as a snap package in all currently supported versions of Ubuntu. To install it, open the terminal and type:

sudo apt install snapd  
sudo snap install kotlin --classic 

Available tools:

• kotlinc
• kotlinc-jvm
• kotlinc-js
• kotlin-dce-js

Example

1. Create a simple application in Kotlin that displays Hello, World!. Create a new file with executable permission called hello.kt with the following:

   fun main(args: Array<String>) {
       println("Hello, World!")
   }
   

2. Compile the application using the Kotlin compiler.

   kotlinc hello.kt -include-runtime -d hello.jar  
   

3. Run the application.

   java -jar hello.jar