var args string
	if command == "install" {
		args = "install"
	} else {
		args = "manifest " + command
	}
	for _, f := range filenames {
		args += " -f " + f
	}
	if flags != "" {
		args += " " + flags
	}
	if fileSelect != nil {
		filters := []string{}
		filters = append(filters, fileSelect...)

			diffSelect: "Service:*:istio-egressgateway",
			fileSelect: []string{"templates/service.yaml"},
			flags:      "--set values.gateways.istio-egressgateway.enabled=true",
			noInput:    true,
		},
		{
			desc:       "flag_output",
			flags:      "-o " + flagOutputDir,
			diffSelect: "Deployment:*:istiod",
			fileSelect: []string{"templates/deployment.yaml"},
			outputDir:  flagOutputDir,
		},
		{