Getting Started

入门

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Install the Go tools

安装Go语言工具

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if you are upgrading from an older version of Go you must first remove the existing version.

如果你想要升级一个旧版本Go，你必须先删除现有的版本。

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Linux, Mac OS X, and FreeBSD tarballs

Linux，Mac OS X，和FreeBSD压缩包

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Download the archive and extract it into /usr/local, creating a Go tree in /usr/local/go. For example.

tar -C /usr/local -zxf go$VERSION.$OS-$ARCH.tar.gz

下载归档文件并将它提取至/usr/local/go，举个例子。

tar -C /usr/local -zxf go$VERSION.$OS-$ARCH.tar.gz

Choose the archive file appropriate for your installation. For instance, if you are installing Go version 1.2.1 for 64-bit x86 on Linux, the archive you want is called go1.2.1 linux-amd64.tar.gz.

选择适合你安装的归档文件。例如，如果你想在64-bit x86的Linux主机上安装1.2.1版本的Go，则你所需要的归档文件称为go1.2.1 linux-amd64.tar.gz

(Typically these commands be run as or through sudo)

（通常这些命令必须以root权限或通过sudo运行）

Add /usr/local/go/bin to the PATH environment variable. You can do this by adding this line to your /etc/profile (for a system-wide installation) or $HOME/.profile:

exprot PATH=$PATH:/usr/local/go/bin

将/usr/local/go/bin添加至PATH环境变量中。你可以将此行添加到/etc/progile（全局安装）或者$HOME/.profile:

exprot PATH=$PATH:/usr/local/go/bin

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Installing to a custom location

自定义位置安装

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The Go binary distributions assume they will be installed in /usr/local/go (or c:\Go under Windows), but it is possible to install the Go tools to a different location. In this case you must set the GOROOT environment variable to point to the directory in which it was installed.

Go二进制发行版将会把文件安装至/usr/local/go（或者在Winodws安装在c:\Go），但是允许把Go工具安装在一个不同的位置。在这种情况下，你必须将GOROOT环境变量设置为安装的路径。

For example, if you installed Go to your home directory you should add commands like the following to $HOME/.profile:

export GOROOT=$HOME/go1.x
export PATH=$PATH:$GOROOT/bin

举一个例子，如果你将Go安装至home目录下，你需要在$HOME/.profile文件中添加以下命令：

export GOROOT=$HOME/go1.x
export PATH=$PATH:$GOROOT/bin

Note: GOROOT must be set only when installing to a custom location.

注意：GOROOT只有在安装到自定义位置时才能设置。

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