Add timing stuff

cmd/root.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"time"
 
 	"github.com/spf13/cobra"
 
@@ -22,10 +23,19 @@ var rootCommand = &cobra.Command{
 	Args: cobra.ExactArgs(1),
 	Use:  "hal",
 	RunE: runRootCommand,
+	PreRun: func(cmd *cobra.Command, args []string) {
+		startTime = time.Now()
+	},
+	PostRun: func(cmd *cobra.Command, args []string) {
+		totalTime := time.Since(startTime)
+		fmt.Printf("Total execution time: %v", totalTime)
+	},
 }
 
 var debug bool
 
+var startTime time.Time
+
 func init() {
 	rootCommand.Flags().BoolVarP(&debug, "debug", "d", false, "Enable debug mode")
 }