设置后，环境变量保持不变

Question

I start learning Go programming by watching online tutorials. I use Windows command prompt. However, after I typed set GOOS = darwin then used go env to print environment variables, GOOS was not set to GOOS=darwin but still GOOS=windows as default.

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Here is what I got. Could someone tell me where I went wrong such that I cannot make change on GOOS ?

C:\GoPath\src\palindrome>set GOOS = darwin

C:\GoPath\src\palindrome>go env
set GOARCH=amd64
set GOBIN=
set GOEXE=.exe
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows

Answer 1

"Any extra spaces around either the variable name or the string, will not be ignored, SET is not forgiving of extra spaces like many other scripting languages."

Change set GOOS = darwin to set GOOS=darwin - ie, the same format you see in the output of go env .