powershell 查看环境变量
语法:$env:环境变量名称
# $env 后面紧跟要查看的环境变量名称
PS C:\Users\cao_c> $env:GOPATH
D:\workproject\go
设置环境变量
$env:name=value
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语法:$env:环境变量名称
# $env 后面紧跟要查看的环境变量名称
PS C:\Users\cao_c> $env:GOPATH
D:\workproject\go
设置环境变量
$env:name=value