diff --git a/dflog/logger.go b/dflog/logger.go
index ca965e7..4bb0af6 100644
--- a/dflog/logger.go
+++ b/dflog/logger.go
@@ -19,12 +19,10 @@ package dflog
 import (
 	"fmt"
 	"os"
-	"path"
 	"strconv"
 
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
-	"golang.org/x/sys/unix"
 	"google.golang.org/grpc/grpclog"
 )
 
@@ -301,27 +299,3 @@ func (z *zapGrpc) Fatalln(args ...any) {
 func (z *zapGrpc) V(level int) bool {
 	return level <= z.verbose
 }
-
-// Redirect stdout and stderr to file for debugging.
-func RedirectStdoutAndStderr(console bool, logDir string) {
-	// When console log is enabled, skip redirect.
-	if console {
-		return
-	}
-
-	// Redirect stdout to stdout.log file.
-	stdoutPath := path.Join(logDir, "stdout.log")
-	if stdout, err := os.OpenFile(stdoutPath, os.O_WRONLY|os.O_CREATE|os.O_APPEND|os.O_SYNC, 0644); err != nil {
-		Warnf("open %s error: %s", stdoutPath, err)
-	} else if err := unix.Dup2(int(stdout.Fd()), int(os.Stdout.Fd())); err != nil {
-		Warnf("redirect stdout error: %s", err)
-	}
-
-	// Redirect stderr to stderr.log file.
-	stderrPath := path.Join(logDir, "stderr.log")
-	if stderr, err := os.OpenFile(stderrPath, os.O_WRONLY|os.O_CREATE|os.O_APPEND|os.O_SYNC, 0644); err != nil {
-		Warnf("open %s error: %s", stderrPath, err)
-	} else if err := unix.Dup2(int(stderr.Fd()), int(os.Stderr.Fd())); err != nil {
-		Warnf("redirect stderr error: %s", err)
-	}
-}
diff --git a/dflog/loginit.go b/dflog/loginit.go
index 8b52e2e..b6f483f 100644
--- a/dflog/loginit.go
+++ b/dflog/loginit.go
@@ -17,10 +17,10 @@
 package dflog
 
 import (
+	"github.com/urchinfs/sugon-sdk/types"
+	"go.uber.org/zap"
 	"path"
 	"path/filepath"
-	"go.uber.org/zap"
-	"github.com/urchinfs/sugon-sdk/types"
 )
 
 type logInitMeta struct {
diff --git a/dflog/signal.go b/dflog/signal.go
index 6db8a69..7699be4 100644
--- a/dflog/signal.go
+++ b/dflog/signal.go
@@ -33,7 +33,7 @@ var (
 
 func startLoggerSignalHandler() {
 	signals := make(chan os.Signal, 1)
-	signal.Notify(signals, syscall.SIGUSR1)
+	signal.Notify(signals, syscall.SIGINT)
 
 	go func() {
 		for {
diff --git a/test.zip b/test.zip
deleted file mode 100644
index 689710c..0000000
Binary files a/test.zip and /dev/null differ