check(err)
		fmt.Printf("export GOIOS_APP_ID=%s\n", appID)

		teamID, err := plistExtract(fname, "Entitlements:com.apple.developer.team-identifier")
		check(err)
		fmt.Printf("export GOIOS_TEAM_ID=%s\n", teamID)
	}
}

func detectMobileProvisionFiles(udids [][]byte) []string {
	cmd := exec.Command("mdfind", "-name", ".mobileprovision")
	lines := getLines(cmd)

	// https://developer.apple.com/membercenter/index.action#accountSummary as Team ID.
	appID = getenv("GOIOS_APP_ID")

	// e.g. Z8B3JBXXXX, available at
	// https://developer.apple.com/membercenter/index.action#accountSummary as Team ID.
	teamID = getenv("GOIOS_TEAM_ID")

	// Device IDs as listed with ios-deploy -c.
	deviceID = os.Getenv("GOIOS_DEVICE_ID")