update-golang

update-golang is a script to easily fetch and install new Golang releases

Table of Contents

• How it works
• Usage
• Caution
• Example
• Customization

Created by gh-md-toc

How it works

This is the default behavior:

1. The script uses local system OS and ARCH to download the correct binary release. It is not harmful to run the script multiple times. Downloaded releases are kept as cache under '/usr/local'. You can erase them manually.

2. The release is installed at '/usr/local/go'.

3. The path '/usr/local/go/bin' is added to PATH using '/etc/profile.d/golang_path.sh'.

4. Only if needed, GOROOT is properly setup, also using '/etc/profile.d/golang_path.sh'.

You can customize the behavior by setting environment variables (see Customization below).

Usage

git clone https://github.com/udhos/update-golang
cd update-golang
sudo ./update-golang.sh

Caution

Before running the script, make sure you have an untampered copy by verifying the SHA256 checksum.

$ wget -qO hash.txt https://raw.githubusercontent.com/udhos/update-golang/master/update-golang.sh.sha256
$ sha256sum -c hash.txt
update-golang.sh: OK

Example

$ sudo ./update-golang.sh
SOURCE=https://storage.googleapis.com/golang
DESTINATION=/usr/local
RELEASE=1.8.1
OS=linux
ARCH=amd64
update-golang.sh: will install golang go1.8.1.linux-amd64 as: /usr/local/go
update-golang.sh: https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz is remote
--2017-04-11 12:27:02--  https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz
Resolving storage.googleapis.com (storage.googleapis.com)... 216.58.222.112
Connecting to storage.googleapis.com (storage.googleapis.com)|216.58.222.112|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 91277742 (87M) [application/x-gzip]
Saving to: ‘go1.8.1.linux-amd64.tar.gz’

go1.8.1.linux-amd64.tar.gz                        100%[==========================================================================================================>]  87,05M  11,2MB/s    in 8,2s

2017-04-11 12:27:11 (10,6 MB/s) - ‘go1.8.1.linux-amd64.tar.gz’ saved [91277742/91277742]

update-golang.sh: remove old link: /usr/local/go
update-golang.sh: untar: rm -rf /usr/local/go1.8.1.linux-amd64
update-golang.sh: untar: tar xf /usr/local/go1.8.1.linux-amd64.tar.gz
update-golang.sh: untar: rm /usr/local/go1.8.1.linux-amd64.tar.gz
update-golang.sh: golang go1.8.1.linux-amd64 installed at: /usr/local/go
update-golang.sh: remember to add /usr/local/go/bin to your PATH
$

Customization

These environment variables are available for customization:

SOURCE=https://storage.googleapis.com/golang
DESTINATION=/usr/local
RELEASE=1.8.1
OS=linux
ARCH=amd64

Example:

$ sudo RELEASE=1.8 ./update-golang.sh