diff --git a/internal/pkg/commands/adapter.go b/internal/pkg/commands/adapter.go
index e848565..067b64c 100644
--- a/internal/pkg/commands/adapter.go
+++ b/internal/pkg/commands/adapter.go
@@ -22,6 +22,7 @@
 	"github.com/jhump/protoreflect/dynamic"
 	"github.com/opencord/voltctl/pkg/format"
 	"github.com/opencord/voltctl/pkg/model"
+	"log"
 )
 
 const (
@@ -39,7 +40,9 @@
 var adapterOpts = AdapterOpts{}
 
 func RegisterAdapterCommands(parent *flags.Parser) {
-	parent.AddCommand("adapter", "adapter commands", "Commands to query and manipulate VOLTHA adapters", &adapterOpts)
+	if _, err := parent.AddCommand("adapter", "adapter commands", "Commands to query and manipulate VOLTHA adapters", &adapterOpts); err != nil {
+		log.Fatalf("Unexpected error while attempting to register adapter commands : %s", err)
+	}
 }
 
 func (options *AdapterList) Execute(args []string) error {
diff --git a/internal/pkg/commands/command.go b/internal/pkg/commands/command.go
index 4693539..2331163 100644
--- a/internal/pkg/commands/command.go
+++ b/internal/pkg/commands/command.go
@@ -145,11 +145,6 @@
 	Data      interface{}
 }
 
-type config struct {
-	ApiVersion string `yaml:"apiVersion"`
-	Server     string `yaml:"server"`
-}
-
 func ProcessGlobalOptions() {
 	if len(GlobalOptions.Config) == 0 {
 		home, err := os.UserHomeDir()
@@ -222,7 +217,9 @@
 		}
 		if result.OutputAs == OUTPUT_TABLE {
 			tableFormat := format.Format(result.Format)
-			tableFormat.Execute(os.Stdout, true, result.NameLimit, data)
+			if err := tableFormat.Execute(os.Stdout, true, result.NameLimit, data); err != nil {
+				log.Fatalf("Unexpected error while attempting to format results as table : %s", err)
+			}
 		} else if result.OutputAs == OUTPUT_JSON {
 			asJson, err := json.Marshal(&data)
 			if err != nil {
diff --git a/internal/pkg/commands/completion.go b/internal/pkg/commands/completion.go
index c044b6a..17de063 100644
--- a/internal/pkg/commands/completion.go
+++ b/internal/pkg/commands/completion.go
@@ -19,6 +19,7 @@
 	"fmt"
 	flags "github.com/jessevdk/go-flags"
 	"github.com/opencord/voltctl/internal/pkg/completion"
+	"log"
 )
 
 type BashOptions struct{}
@@ -28,7 +29,9 @@
 }
 
 func RegisterCompletionCommands(parent *flags.Parser) {
-	parent.AddCommand("completion", "generate shell compleition", "Commands to generate shell compleition information", &CompletionOptions{})
+	if _, err := parent.AddCommand("completion", "generate shell compleition", "Commands to generate shell compleition information", &CompletionOptions{}); err != nil {
+		log.Fatalf("Unexpected error while attempting to register completion commands : %s", err)
+	}
 }
 
 func (options *BashOptions) Execute(args []string) error {
diff --git a/internal/pkg/commands/components.go b/internal/pkg/commands/components.go
index 2de4ee7..95cbd80 100644
--- a/internal/pkg/commands/components.go
+++ b/internal/pkg/commands/components.go
@@ -23,7 +23,7 @@
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/tools/clientcmd"
-	"os"
+	"log"
 )
 
 const (
@@ -43,7 +43,9 @@
 var componentOpts = ComponentOpts{}
 
 func RegisterComponentCommands(parser *flags.Parser) {
-	parser.AddCommand("component", "component instance commands", "Commands to query and manipulate VOLTHA component instances", &componentOpts)
+	if _, err := parser.AddCommand("component", "component instance commands", "Commands to query and manipulate VOLTHA component instances", &componentOpts); err != nil {
+		log.Fatalf("Unexpected error while attempting to register component commands : %s", err)
+	}
 }
 
 func (options *ComponentList) Execute(args []string) error {
@@ -100,10 +102,3 @@
 	GenerateOutput(&result)
 	return nil
 }
-
-func homeDir() string {
-	if h := os.Getenv("HOME"); h != "" {
-		return h
-	}
-	return os.Getenv("USERPROFILE") // windows
-}
diff --git a/internal/pkg/commands/config.go b/internal/pkg/commands/config.go
index d7e4409..aadc9d2 100644
--- a/internal/pkg/commands/config.go
+++ b/internal/pkg/commands/config.go
@@ -19,6 +19,7 @@
 	"fmt"
 	flags "github.com/jessevdk/go-flags"
 	"gopkg.in/yaml.v2"
+	"log"
 )
 
 const copyrightNotice = `
@@ -42,7 +43,9 @@
 }
 
 func RegisterConfigCommands(parent *flags.Parser) {
-	parent.AddCommand("config", "generate voltctl configuration", "Commands to generate voltctl configuration", &ConfigOptions{})
+	if _, err := parent.AddCommand("config", "generate voltctl configuration", "Commands to generate voltctl configuration", &ConfigOptions{}); err != nil {
+		log.Fatalf("Unexpected error while attempting to register config commands : %s", err)
+	}
 }
 
 func (options *ConfigOptions) Execute(args []string) error {
diff --git a/internal/pkg/commands/devicegroups.go b/internal/pkg/commands/devicegroups.go
index c499afc..7314b0a 100644
--- a/internal/pkg/commands/devicegroups.go
+++ b/internal/pkg/commands/devicegroups.go
@@ -22,6 +22,7 @@
 	"github.com/jhump/protoreflect/dynamic"
 	"github.com/opencord/voltctl/pkg/format"
 	"github.com/opencord/voltctl/pkg/model"
+	"log"
 )
 
 const (
@@ -39,8 +40,10 @@
 var deviceGroupOpts = DeviceGroupOpts{}
 
 func RegisterDeviceGroupCommands(parser *flags.Parser) {
-	parser.AddCommand("devicegroup", "device group commands", "Commands to query and manipulate VOLTHA device groups",
-		&deviceGroupOpts)
+	if _, err := parser.AddCommand("devicegroup", "device group commands", "Commands to query and manipulate VOLTHA device groups",
+		&deviceGroupOpts); err != nil {
+		log.Fatalf("Unexpected error while attempting to register device group commands : %s", err)
+	}
 }
 
 func (options *DeviceGroupList) Execute(args []string) error {
diff --git a/internal/pkg/commands/devices.go b/internal/pkg/commands/devices.go
index 9f836b4..78d1aca 100644
--- a/internal/pkg/commands/devices.go
+++ b/internal/pkg/commands/devices.go
@@ -23,6 +23,7 @@
 	"github.com/jhump/protoreflect/dynamic"
 	"github.com/opencord/voltctl/pkg/format"
 	"github.com/opencord/voltctl/pkg/model"
+	"log"
 	"strings"
 )
 
@@ -113,7 +114,9 @@
 var deviceOpts = DeviceOpts{}
 
 func RegisterDeviceCommands(parser *flags.Parser) {
-	parser.AddCommand("device", "device commands", "Commands to query and manipulate VOLTHA devices", &deviceOpts)
+	if _, err := parser.AddCommand("device", "device commands", "Commands to query and manipulate VOLTHA devices", &deviceOpts); err != nil {
+		log.Fatalf("Unexpected error while attempting to register device commands : %s", err)
+	}
 }
 
 func (i *DeviceId) Complete(match string) []flags.Completion {
diff --git a/internal/pkg/commands/flows.go b/internal/pkg/commands/flows.go
index acbb09c..d16abab 100644
--- a/internal/pkg/commands/flows.go
+++ b/internal/pkg/commands/flows.go
@@ -40,8 +40,6 @@
 }
 
 var (
-	flowOpts = FlowOpts{}
-
 	// Used to sort the table colums in a consistent order
 	SORT_ORDER = map[string]uint16{
 		"Id":                     0,
@@ -104,29 +102,6 @@
 	return b.String()
 }
 
-func toVlanId(vid uint32) string {
-	if vid == 0 {
-		return "untagged"
-	} else if vid&0x1000 > 0 {
-		return fmt.Sprintf("%d", vid-4096)
-	}
-	return fmt.Sprintf("%d", vid)
-}
-
-func appendInt32(base string, val int32) string {
-	if len(base) > 0 {
-		return fmt.Sprintf("%s,%d", base, val)
-	}
-	return fmt.Sprintf("%d", val)
-}
-
-func appendUint32(base string, val uint32) string {
-	if len(base) > 0 {
-		return fmt.Sprintf("%s,%d", base, val)
-	}
-	return fmt.Sprintf("%d", val)
-}
-
 func (options *FlowList) Execute(args []string) error {
 	if len(args) > 0 {
 		return fmt.Errorf("only a single argument 'DEVICE_ID' can be provided")
diff --git a/internal/pkg/commands/logicaldevices.go b/internal/pkg/commands/logicaldevices.go
index ce09035..16cd48a 100644
--- a/internal/pkg/commands/logicaldevices.go
+++ b/internal/pkg/commands/logicaldevices.go
@@ -23,6 +23,7 @@
 	"github.com/jhump/protoreflect/dynamic"
 	"github.com/opencord/voltctl/pkg/format"
 	"github.com/opencord/voltctl/pkg/model"
+	"log"
 	"strings"
 )
 
@@ -72,7 +73,9 @@
 var logicalDeviceOpts = LogicalDeviceOpts{}
 
 func RegisterLogicalDeviceCommands(parser *flags.Parser) {
-	parser.AddCommand("logicaldevice", "logical device commands", "Commands to query and manipulate VOLTHA logical devices", &logicalDeviceOpts)
+	if _, err := parser.AddCommand("logicaldevice", "logical device commands", "Commands to query and manipulate VOLTHA logical devices", &logicalDeviceOpts); err != nil {
+		log.Fatalf("Unexpected error while attempting to register logical device commands : %s", err)
+	}
 }
 
 func (i *LogicalDeviceId) Complete(match string) []flags.Completion {