I got an error when trying to run Hello World in Go language

The story that Hello world could not be done

I had the opportunity to use Golang in my business. I didn't touch it in earnest, so I tried to study by myself for the time being.

--For the time being, create hello.go and try to display hello world.

$ go run hello.go
exec: "C:\\Users\\xxxxx\\AppData\\Local\\Temp\\go-build929698758\\b001\\exe\\hello": file does not exist

Ah? ?? what's this? Will you die in hello World? usually? That's why.

Cause of failure

For the time being, just try build

xxxxx@xxx MSYS /c/Users/xxxxx/Documents/test/go
$ go build hello.go

xxxxx@xxx MSYS /c/Users/xxxxx/Documents/test/go
$ ls
hello  hello.go

--Binary? Isn't windows! !!

If you run it on windows

$ ls
hello.exe  hello.go

The correct answer is that you can do it ~

** The cause of this was the environment variable GOOS. ** **

$ env | grep GOOS
GOOS=linux

It was like this. This GOOS = linux didn't work. I didn't want to set it to texto during work. If you set the environment variable GOOS = linux, it seems that the binary file created by build is created for Linux? Can it be run on MSYS2 or git-for-windows? I thought, but it was an error. By the way

What to do

Change GOOS

$ export GOOS=windows
#If it is cmd,
set GOOS=windows

If you build after doing hello.exe will be generated. This is the solution. I don't know if it's correct to set GOOS = windows. Should I delete this environment variable already?

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