查看brew go的信息

$ brew info go

go: stable 1.13 (bottled), HEAD
Open source programming language to build simple/reliable/efficient software
https://golang.org
/usr/local/Cellar/go/1.13 (9,268 files, 414.0MB) *
  Poured from bottle on 2020-03-10 at 10:35:11
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/go.rb
==> Requirements
Required: macOS >= 10.10 ✔
==> Options
--HEAD
        Install HEAD version
==> Analytics
install: 136,502 (30 days), 357,976 (90 days), 1,350,567 (365 days)
install_on_request: 108,785 (30 days), 283,114 (90 days), 1,052,138 (365 days)
build_error: 0 (30 days)

可以看到第1行的go: stable 1.13和第4行/usr/local/Cellar/go/1.13的版本是一致的，如果不一致，可以用brew upgrade go 来更新

安装/更新go

安装

$ brew install go

更新

$ brew upgrade go

查看 go 已安装的文件

$ brew list go

/usr/local/Cellar/go/1.13/bin/go
/usr/local/Cellar/go/1.13/bin/godoc
/usr/local/Cellar/go/1.13/bin/gofmt
/usr/local/Cellar/go/1.13/libexec/api/ (17 files)
/usr/local/Cellar/go/1.13/libexec/bin/ (3 files)
/usr/local/Cellar/go/1.13/libexec/doc/ (154 files)
/usr/local/Cellar/go/1.13/libexec/lib/ (3 files)
/usr/local/Cellar/go/1.13/libexec/misc/ (347 files)
/usr/local/Cellar/go/1.13/libexec/pkg/ (573 files)
/usr/local/Cellar/go/1.13/libexec/src/ (6011 files)
/usr/local/Cellar/go/1.13/libexec/test/ (2145 files)
/usr/local/Cellar/go/1.13/libexec/ (7 files)