Building Command Line Tools with Golang

Building Command Line Tools with Golang

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  Building Command Line Tools withGolang Takaaki Mizuno Innovatube TechTalk #3
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  Who Am I TakaakiMizuno CEO of Innovatube Solutions 19 years experience as software developer 34 years experience in coding Still coding Based in Singapore Japanese born in Japan Published 20+ technical books in Japan
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  Golang Use Cases
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  Golang at Innovatube Weselected 2 primary languages for web/mobile-app back-end development. PHP Golang Golang is used for non-HTML-Heavy Web development API Server for Mobile Apps Use React on Frontend and backend system only returns structured data such as JSON
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  Golang Use Cases WebServices Mobile Applications ( Android [ver 1.4~] / iOS [ver 1.5~]) Game Backend Daemon / Service Command Line Tools
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  Golang and Command LineTools
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  Which Language AreYou Using For Writing Command Line Tools ? Node.js Java Python Ruby C++ Golang
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  Which language shouldwe use for command line tools? It depends on the use case of the tool. If the tool is dedicated for specific languages/framework, use that languages. Ruby for rubygems PHP for composer Node.js for front-end task runners ( gulp / grunt ) It the tool is a part of a project, you should use same language Java for Java project Python for Python project Other cases Use Golang
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  Benefit for CommandLine Tools Single Binary Cross Platform ( Can support Windows easily ) No run-time dependencies Concurrency
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  Many famous “commandline” tools are written in Golang docker Terraform ( By Hashicorp) hub ( by GitHub )
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  Write command line toolsin Golang
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  Many Libraries YouCan Use Standard CLI Libraries for building standard or basic Command Line applications cli - A feature-rich and easy to use command-line package based on golang tag cli-init - The easy way to start building Golang command line application. climax - An alternative CLI with "human face", in spirit of Go command cobra - A Commander for modern Go CLI interactions codegangsta/cli - A small package for building command line apps in Go. docopt.go - A command-line arguments parser that will make you smile. go-flags - go command line option parser kingpin - A command line and flag parser supporting sub commands. liner - A Go readline-like library for command-line interfaces. mitchellh/cli - A Go library for implementing command-line interfaces. mow.cli - A Go library for building CLI applications with sophisticated flag and argument parsing and validation. From: Awesome-go ( https://github.com/avelino/awesome-go#command-line )
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  You can use“gcli” It generates a skeleton (codes and its directory structure) you need to start building Command Line Interface (CLI) tool https://github.com/tcnksm/gcli
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  Easy To Use gclinew -command=init -command=get -owner=takaaki-mizuno awesomecommand % awesomecommand init
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  DEMO
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  Support 4 CLIlibraries +-----------------+---------+-----------------------------------------------------+ | NAME | COMMAND | URL | +-----------------+---------+-----------------------------------------------------+ | mitchellh_cli | * | https://github.com/mitchellh/cli | | codegangsta_cli | * | https://github.com/codegangsta/cli | | go_cmd | * | https://github.com/golang/go/tree/master/src/cmd/go | | flag | | https://golang.org/pkg/flag/ | +-----------------+---------+-----------------------------------------------------+ % gcli list
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  Some Tips ForGolang ( command line tools )
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  Text Colorize mgutz/ansi &mattn/go-colorable mgutz/ansi is a library to create ANSI colored strings and codes mattn/go-colorable is an io.Writer wrapper to support Windows DOS prompt colorize
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  Building Dashboard gizak/termui Can buildText Base Dashboard with GUI Building- Like APIs
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  Happy Coding!
• 21.
  We are Hiring! Youwant to write Golang ? Join us ! http://innovatube.com/
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  Q & A