修改linux的环境变量

常用修改环境变量的两种方式：

export PATH=$PATH:/usr/lib/go-1.9/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binexport/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/usr/lib/go-1.9export PATH=$PATH:/usr/lib/go-1.9

$PATH = "/usr/local/sbin:/usr......"
$GOROOT = "/usr/lib/go-1.9"
$PATH = $PATH + $GOROOT

echo $PATHenv

profile

vi /etc/profile
#添加以下内容
export GOROOT=/usr/lib/go-1.9
export GOBIN=$GOROOT/bin
export GOAPTH=$GOROOT/src
export GO_WORK_PATH=/home/workspace/go #自定义的工作空间
#前面只是定义了变量，最后一句是关键
export PATH=$PATH:$GOROOT:$GOBIN:$GOPATH:$GO_WORK_PATH

source /ect/profilerebootecho $PATH

.bashrc

vi ~/.bashrc
#发现最下面有以下几行：
export GOROOT=/home/lib
export GOBIN=$GOROOT/bin
export GOAPTH=$GOROOT/src

.bashrcprofile