diff --git a/core/sys.go b/core/sys.go
index c5f90e7..1236962 100644
--- a/core/sys.go
+++ b/core/sys.go
@@ -36,7 +36,7 @@ func Daemon() {
 		panic(err)
 	}
 	logs.Info(sillyGirl.Get("name", "傻妞") + "以静默形式运行")
-	os.WriteFile(pidf, []byte(fmt.Sprintf("%d", proc.Process.Pid)), 0o644)
+	WriteToFile(pidf, (fmt.Sprintf("%d", proc.Process.Pid)))
 	os.Exit(0)
 }
 
diff --git a/core/test.go b/core/test.go
index b94979c..8b47b8b 100644
--- a/core/test.go
+++ b/core/test.go
@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
-	"os"
 	"os/exec"
 	"strings"
 	"time"
@@ -251,7 +250,7 @@ Alias=sillyGirl.service`
 					s.Reply(data)
 					return nil
 				}
-				os.WriteFile("/usr/lib/systemd/system/sillyGirl.service", []byte(service), 0o644)
+				WriteToFile("/usr/lib/systemd/system/sillyGirl.service", (service))
 				exec.Command("systemctl", "disable", string(sillyGirl)).Output()
 				exec.Command("systemctl", "enable", string(sillyGirl)).Output()
 				return "电脑重启后生效。"
diff --git a/core/utils.go b/core/utils.go
new file mode 100644
index 0000000..4d57e23
--- /dev/null
+++ b/core/utils.go
@@ -0,0 +1,18 @@
+package core
+
+import (
+	"fmt"
+	"os"
+)
+
+func WriteToFile(fileName string, content string) error {
+	f, err := os.OpenFile(fileName, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
+	if err != nil {
+		fmt.Println("file create failed. err: " + err.Error())
+	} else {
+		n, _ := f.Seek(0, os.SEEK_END)
+		_, err = f.WriteAt([]byte(content), n)
+		defer f.Close()
+	}
+	return err
+}