diff --git a/main.go b/main.go
index 7b123f5..1718564 100644
--- a/main.go
+++ b/main.go
@@ -2,6 +2,7 @@
 package main
 
 import (
+	"fmt"
 	"log/slog"
 	"os"
 	"os/exec"
@@ -13,15 +14,26 @@ import (
 var (
 	cliEndpoint = kingpin.Flag("endpoint", "Override command's default URL with the given URL").Envar("SKPR_S3_SYNC_ENDPOINT").String()
 	cliExclude  = kingpin.Flag("exclude", "Exclude paths from the list to be synced").Envar("SKPR_S3_SYNC_EXCLUDE").Default(".htaccess").String()
-	cliMode     = kingpin.Flag("mode", "Mode which will used for syncing (sync or s3)").Envar("SKPR_S3_SYNC_MODE").Default("sync").String()
+	cliMode     = kingpin.Flag("mode", "Mode which will used for syncing (sync or s3)").Envar("SKPR_S3_SYNC_MODE").Default(ModeSync).String()
 	cliSource   = kingpin.Arg("source", "Source files which are synced (local or S3 path)").Required().String()
 	cliTarget   = kingpin.Arg("target", "Target files which are synced (local or S3 path)").Required().String()
 )
 
+const (
+	// ModeCP for copy only operations.
+	ModeCP = "cp"
+	// ModeSync for copy and syncing file operations.
+	ModeSync = "sync"
+)
+
 func main() {
 	kingpin.Parse()
 
-	args := buildArgs(*cliEndpoint, *cliMode, *cliSource, *cliTarget, *cliExclude)
+	args, err := buildArgs(*cliEndpoint, *cliMode, *cliSource, *cliTarget, *cliExclude)
+	if err != nil {
+		slog.Error(err.Error())
+		os.Exit(1)
+	}
 
 	slog.Info("Starting sync", "args", strings.Join(args, " "))
 
@@ -39,15 +51,23 @@ func main() {
 }
 
 // Command which is compatible with the AWS S3 sync command line interface.
-func buildArgs(endpoint, mode, source, target, exclude string) []string {
+func buildArgs(endpoint, mode, source, target, exclude string) ([]string, error) {
 	args := []string{"s3"}
 
+	if *cliMode != ModeCP && *cliMode != ModeSync {
+		return args, fmt.Errorf("mode not support: %s", mode)
+	}
+
 	if endpoint != "" {
 		args = append(args, "--endpoint-url", endpoint)
 	}
 
 	args = append(args, mode)
 
+	if mode == ModeCP {
+		args = append(args, "--recursive")
+	}
+
 	if exclude != "" {
 		for _, e := range strings.Split(exclude, ",") {
 			args = append(args, "--exclude", e)
@@ -56,5 +76,5 @@ func buildArgs(endpoint, mode, source, target, exclude string) []string {
 
 	args = append(args, source, target)
 
-	return args
+	return args, nil
 }