2 all: coverage mac linux
5 go
test -coverprofile .
/cover.out .
/...
6 go tool cover
-html
=cover.out
-o cover.html
9 GOOS
=darwin GOARCH
=amd64 go build
-o mailpopbox-mac-amd64
12 GOOS
=linux GOARCH
=amd64 go build
-o mailpopbox-linux-amd64