diff --git a/cmd/root.go b/cmd/root.go
index 64ab1b5..d9079bd 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -30,9 +30,6 @@ func Execute() {
 }
 
 func init() {
-	// Here you will define your flags and configuration settings.
-	// Cobra supports persistent flags, which, if defined here,
-	// will be global for your application.
 
 	// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.mysql-bkup.yaml)")
 
diff --git a/cmd/version.go b/cmd/version.go
index 3bcf97e..f9f7e23 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -16,6 +16,7 @@ var VersionCmd = &cobra.Command{
 	},
 }
 
+// Version display application version
 func Version() {
 	fmt.Printf("Version: %s \n", appVersion)
 	fmt.Print()
diff --git a/main.go b/main.go
index 62fa9eb..cb47aba 100644
--- a/main.go
+++ b/main.go
@@ -155,6 +155,7 @@ func start() {
 				utils.Info("Restore database from local")
 				pkg.RestoreDatabase(file)
 			} else {
+				//Restore from S3
 				utils.Info("Restore database from s3")
 				s3Restore()
 			}
@@ -163,6 +164,7 @@ func start() {
 				utils.Info("Backup database to local storage")
 				pkg.BackupDatabase(disableCompression)
 			} else {
+				//Backup to S3
 				utils.Info("Backup database to s3 storage")
 				s3Backup()
 			}
diff --git a/pkg/backup.go b/pkg/backup.go
index 04550dd..fdb09a9 100644
--- a/pkg/backup.go
+++ b/pkg/backup.go
@@ -37,10 +37,14 @@ func BackupDatabase(disableCompression bool) {
 		utils.TestDatabaseConnection()
 		// Backup Database database
 		utils.Info("Backing up database...")
+		//Generate file name
 		bkFileName := fmt.Sprintf("%s_%s.sql.gz", dbName, time.Now().Format("20060102_150405"))
 
+		// Verify is compression is disabled
 		if disableCompression {
+			//Generate file name
 			bkFileName = fmt.Sprintf("%s_%s.sql", dbName, time.Now().Format("20060102_150405"))
+			// Execute mysqldump
 			cmd := exec.Command("mysqldump",
 				"-h", dbHost,
 				"-P", dbPort,
@@ -53,6 +57,7 @@ func BackupDatabase(disableCompression bool) {
 				log.Fatal(err)
 			}
 
+			// save output
 			file, err := os.Create(fmt.Sprintf("%s/%s", storagePath, bkFileName))
 			if err != nil {
 				log.Fatal(err)
@@ -66,6 +71,7 @@ func BackupDatabase(disableCompression bool) {
 			utils.Done("Database has been backed up")
 
 		} else {
+			// Execute mysqldump
 			cmd := exec.Command("mysqldump", "-h", dbHost, "-P", dbPort, "-u", dbUserName, "--password="+dbPassword, dbName)
 			stdout, err := cmd.StdoutPipe()
 			if err != nil {
diff --git a/pkg/restore.go b/pkg/restore.go
index cb19035..28fd6a4 100644
--- a/pkg/restore.go
+++ b/pkg/restore.go
@@ -25,7 +25,7 @@ func RestoreDatabase(file string) {
 			utils.TestDatabaseConnection()
 
 			extension := filepath.Ext(fmt.Sprintf("%s/%s", storagePath, file))
-			// GZ compressed file
+			// Restore from compressed file / .sql.gz
 			if extension == ".gz" {
 				str := "zcat " + fmt.Sprintf("%s/%s", storagePath, file) + " | mysql -h " + os.Getenv("DB_HOST") + " -P " + os.Getenv("DB_PORT") + " -u " + os.Getenv("DB_USERNAME") + " --password=" + os.Getenv("DB_PASSWORD") + " " + os.Getenv("DB_NAME")
 				_, err := exec.Command("bash", "-c", str).Output()
@@ -36,7 +36,7 @@ func RestoreDatabase(file string) {
 				utils.Done("Database has been restored")
 
 			} else if extension == ".sql" {
-				//SQL file
+				//Restore from sql file
 				str := "cat " + fmt.Sprintf("%s/%s", storagePath, file) + " | mysql -h " + os.Getenv("DB_HOST") + " -P " + os.Getenv("DB_PORT") + " -u " + os.Getenv("DB_USERNAME") + " --password=" + os.Getenv("DB_PASSWORD") + " " + os.Getenv("DB_NAME")
 				_, err := exec.Command("bash", "-c", str).Output()
 				if err != nil {
diff --git a/pkg/s3fs.go b/pkg/s3fs.go
index 1ba529c..8472fc7 100644
--- a/pkg/s3fs.go
+++ b/pkg/s3fs.go
@@ -44,6 +44,8 @@ func MountS3Storage(s3Path string) {
 		}
 		//Change file permission
 		utils.ChangePermission(s3fsPasswdFile, 0600)
+
+		//Mount object storage
 		utils.Info("Mounting Object storage in", s3MountPath)
 		if isEmpty, _ := utils.IsDirEmpty(s3MountPath); isEmpty {
 			cmd := exec.Command("s3fs", bucketName, s3MountPath,
diff --git a/utils/utils.go b/utils/utils.go
index 7a5d7af..a6fc8cf 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -19,10 +19,6 @@ func Info(v ...any) {
 func Done(v ...any) {
 	fmt.Println("✔ ", fmt.Sprint(v...))
 }
-func Warning(v ...any) {
-	fmt.Println("[Warning: ] ", fmt.Sprint(v...))
-}
-
 func Fatal(v ...any) {
 	fmt.Println("✘ ", fmt.Sprint(v...))
 	os.Exit(1)