Go: インストール

Windows 10

コマンドプロンプトを管理者権限で起動し Install with cmd.exe に記述されているコマンドを実行する。

Microsoft Windows [Version 10.0.17134.765]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
Getting latest version of the Chocolatey package for download.
Getting Chocolatey from https://chocolatey.org/api/v2/package/chocolatey/0.10.15.
Downloading 7-Zip commandline tool prior to extraction.
Extracting C:\Users\TAKAMI~1\AppData\Local\Temp\chocolatey\chocInstall\chocolatey.zip to C:\Users\TAKAMI~1\AppData\Local\Temp\chocolatey\chocInstall...
Installing chocolatey on this machine
Creating ChocolateyInstall as an environment variable (targeting 'Machine')
  Setting ChocolateyInstall to 'C:\ProgramData\chocolatey'
WARNING: It's very likely you will need to close and reopen your shell
  before you can use choco.
Restricting write permissions to Administrators
We are setting up the Chocolatey package repository.
The packages themselves go to 'C:\ProgramData\chocolatey\lib'
  (i.e. C:\ProgramData\chocolatey\lib\yourPackageName).
A shim file for the command line goes to 'C:\ProgramData\chocolatey\bin'
  and points to an executable in 'C:\ProgramData\chocolatey\lib\yourPackageName'.

Creating Chocolatey folders if they do not already exist.

WARNING: You can safely ignore errors related to missing log files when
  upgrading from a version of Chocolatey less than 0.9.9.
  'Batch file could not be found' is also safe to ignore.
  'The system cannot find the file specified' - also safe.
chocolatey.nupkg file not installed in lib.
 Attempting to locate it from bootstrapper.
PATH environment variable does not have C:\ProgramData\chocolatey\bin in it. Adding...
警告: Not setting tab completion: Profile file does not exist at 'C:\Users\Takami
Torao\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1'.
Chocolatey (choco.exe) is now ready.
You can call choco from anywhere, command line or powershell by typing choco.
Run choco /? for a list of functions.
You may need to shut down and restart powershell and/or consoles
 first prior to using choco.
Ensuring chocolatey commands are on the path
Ensuring chocolatey.nupkg is in the lib folder

Go をインストールする。

C:\WINDOWS\system32>choco install golang
Chocolatey v0.10.15
Installing the following packages:
golang
By installing you accept licenses for the packages.
Progress: Downloading golang 1.12.5... 100%

golang v1.12.5 [Approved]
golang package files install completed. Performing other installation steps.
The package golang wants to run 'chocolateyinstall.ps1'.
Note: If you don't run this script, the installation will fail.
Note: To confirm automatically next time, use '-y' or consider:
choco feature enable -n allowGlobalConfirmation
Do you want to run the script?([Y]es/[A]ll - yes to all/[N]o/[P]rint): y

Downloading golang 64 bit
  from 'https://dl.google.com/go/go1.12.5.windows-amd64.msi'
Progress: 100% - Completed download of C:\Users\Takami Torao\AppData\Local\Temp\chocolatey\golang\1.12.5\go1.12.5.windows-amd64.msi (117.7 MB).
Download of go1.12.5.windows-amd64.msi (117.7 MB) completed.
Hashes match.
Installing golang...
golang has been installed.
  golang may be able to be automatically uninstalled.
Environment Vars (like PATH) have changed. Close/reopen your shell to
 see the changes (or in powershell/cmd.exe just type `refreshenv`).
 The install of golang was successful.
  Software installed as 'msi', install location is likely default.

Chocolatey installed 1/1 packages.
 See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).

新しいコマンドプロンプト (ユーザ権限) を起動してバージョンを確認する。

C:\Users\Takami Torao>go --version
flag provided but not defined: -version
Go is a tool for managing Go source code.
...

macOS

$ brew install go dep
==> Downloading https://homebrew.bintray.com/bottles/go-1.12.5.mojave.bottle.tar.gz
...
==> Pouring go-1.12.5.mojave.bottle.tar.gz
🍺  /usr/local/Cellar/go/1.12.5: 9,808 files, 452.6MB

$ go version
go version go1.12.5 darwin/amd64