const internal/syscall/unix.X_OK 2 uses internal/syscall/unix (current package) constants.go#L12: X_OK = 0x1 os/exec lp_unix.go#L31: err = unix.Eaccess(file, unix.X_OK)
The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)