diff --git a/install.sh b/install.sh
index e93f482..dae76fd 100644
--- a/install.sh
+++ b/install.sh
@@ -694,27 +694,27 @@ check_port_status() {
     fi
 
     if [[ -z "$process" ]] && command -v ss &> /dev/null; then
-        process=$(ss -tulnp 2>/dev/null | grep ":${port} " | grep -oP '\".*?\"' | tr -d '"' | cut -d',' -f1 | head -1)
+        # 使用sed替代grep -oP以提高兼容性
+        process=$(ss -tulnp 2>/dev/null | grep ":${port} " | sed -n 's/.*users:(("\([^"]*\)".*/\1/p' | head -1)
     fi
 
-    # 3. 根据进程返回状态
+    # 3. 根据进程返回状态（始终返回0以避免set -e导致脚本退出）
     if [[ -z "$process" ]]; then
         # 无法获取进程名（可能权限不足）
         echo "occupied"
-        return 1
     elif [[ "$process" == "nginx" ]] || [[ "$process" =~ ^nginx: ]]; then
         # Nginx占用
         echo "nginx"
-        return 1
     elif [[ "$process" == "apache2" ]] || [[ "$process" == "httpd" ]] || [[ "$process" =~ apache ]]; then
         # Apache占用
         echo "apache"
-        return 2
     else
         # 其他进程
         echo "other:$process"
-        return 3
     fi
+
+    # 始终返回0，避免set -e导致脚本退出
+    return 0
 }
 
 # 改进的端口配置函数