Golang writefile example

err := os.WriteFile("index.txt", []byte("example writefile using go"), os.ModePerm)
if err != nil {
  fmt.Println(err)
}

res, _ := os.ReadFile("index.txt")
fmt.Println(string(res))

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`Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.24/images/create?fromImage=mysql&tag=latest: dial unix /var/run/docker.sock: connect: permission
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