diff --git a/scripts/clash.sh b/scripts/clash.sh
index 52c5698..fcc7cc6 100644
--- a/scripts/clash.sh
+++ b/scripts/clash.sh
@@ -22,7 +22,7 @@ source $ccfg
 [ ! -f $clashdir/mac ] && touch $clashdir/mac
 #开机自启相关
 if [ -f /etc/rc.common ];then
-	if [ -f /etc/rc.d/*clash ];then
+	if [ -n "$(find /etc/rc.d -name '*clash')" ];then
 		autostart=enable_rc
 	else
 		autostart=disable_rc
@@ -62,12 +62,13 @@ if [ -n "$PID" ];then
 	VmRSS=`cat /proc/$PID/status|grep -w VmRSS|awk '{print $2,$3}'`
 	#获取运行时长
 	if [ -n "$start_time" ]; then 
-		time=$((`date +%s`-$start_time))
-		day=$(($time/86400))
-		if [[ $day != 0 ]]; then 
-			day=$day天
-		else
+		time=$(expr `date +%s` - $start_time)
+		#day=$(($time/86400))
+		day=$(expr $time / 86400)
+		if [ "$day" = "0" ]; then 
 			day=""
+		else
+			day="$day""天"
 		fi
 		time=`date -u -d @${time} +%H小时%M分%S秒`
 	fi
diff --git a/scripts/getdate.sh b/scripts/getdate.sh
index c15d351..824376f 100644
--- a/scripts/getdate.sh
+++ b/scripts/getdate.sh
@@ -24,7 +24,7 @@ read -p "请输入对应数字 > " num
 if [ -z "$num" ] || [[ $num -gt 13 ]];then
 	echo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	echo -e "\033[31m请输入正确的数字！\033[0m"
-elif [[ "$num" = 0 ]];then
+elif [[ "$num" = "0" ]];then
 	echo 
 elif [[ $num -le 13 ]];then
 	#将对应标记值写入mark
@@ -161,7 +161,7 @@ do
 	echo -e " 0   \033[31m撤销输入\033[0m"
 	echo -e "回车 \033[32m完成输入\033[0m并\033[33m开始导入\033[0m配置文件！"
 	echo -----------------------------------------------
-	read -p "请输入第"$i"个链接 > " url
+	read -p "请输入第${i}个链接 > " url
 	test=$(echo $url | grep "://")
 	url=`echo ${url/\ \(*\)/''}`   #删除恶心的超链接内容
 	url=`echo ${url/*\&url\=/""}`   #将clash完整链接还原成单一链接
@@ -173,7 +173,7 @@ do
 		else
 			Url="$Url"\|"$url"
 		fi
-		i=$(($i+1))
+		i=$(expr $i + 1)
 	elif [ -z "$url" ];then
 		[ -n "$Url" ] && linkset
 	elif [[ $url == 0 ]];then
diff --git a/scripts/start.sh b/scripts/start.sh
index 6f07ca3..e5c382a 100644
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -82,14 +82,14 @@ if [ "$result" != "200" ];then
 			echo -e "\033[32m无法获取配置文件，请检查链接格式以及网络连接状态！\033[0m"
 			exit 1
 		else
-			retry=$(($retry + 1))
+			retry=$(expr $retry + 1)
 			echo -e "\033[32m尝试使用其他服务器获取配置！\033[0m"
 			echo -e "\033[33m正在尝试第$retry次/共5次！\033[0m"
 			sed -i '/server_link=*/'d $ccfg
 			if [ "$server_link" -ge 5 ]; then
 				server_link=0
 			fi
-			server_link=$(($server_link + 1))
+			server_link=$(expr $server_link + 1)
 			sed -i "1i\server_link=$server_link" $ccfg
 			Https=""
 			getyaml
@@ -172,7 +172,7 @@ fi
 	yaml=$clashdir/config.yaml
 	#预删除需要添加的项目
 	i=$(grep  -n  "^proxies:" $clashdir/config.yaml | head -1 | cut -d ":" -f 1)
-	i=$(($i-1))
+	i=$(expr $i - 1)
 	sed -i "1,${i}d" $yaml
 	#添加配置
 	sed -i "1imixed-port:\ $mix_port" $yaml