Go (or GoLang) is a modern programming language popular for its minimal syntax and support for concurrency, as well as for the ease it provides in building native binaries on foreign platforms.
The “Hello, World!” program is a classic and time-honored tradition in computer programming. It's a simple and complete first program for beginners, and it's a good way to make sure your environment is properly configured. This tutorial will walk you through creating this program in Go.
In this tutorial you'll explore various ways to use the `flag` package to build different kinds of command-line utilities. You'll use a flag to control program output, introduce positional arguments where you mix flags and other data, and then implement sub-commands.
Go supports cross-platform compiling by building support for multiple platforms directly into the go build tool. By using the GOOS and GOARCH environment variables and build tags, you can control which OS and architecture your final binary is built for. In this tutorial, you will build binaries for multiple operating systems and system architectures on your own system.