$ go tool [-n] command [args...] Tool runs the go tool command identified by the arguments. With no arguments it prints the list of known tools. For more about each tool command, see 'go doc cmd/<command>'.
print the command that would be executed but not execute it
$ go tool pprof $ go tool pprof -h $ go doc cmd/pprof
Pprof interprets and displays profiles of Go programs. For more information, see https://blog.golang.org/profiling-go-programs
$ go tool pprof binary profile