diff --git a/config-os-and-apps.sh b/config-os-and-apps.sh
index 2c9275b..32ab0d5 100644
--- a/config-os-and-apps.sh
+++ b/config-os-and-apps.sh
@@ -5,19 +5,30 @@
 
 # 默认分支
 BRANCH="dev"
+# 是否直接初始化配置仓库
+# INIT=""
+
+# 检查是否安装git
+command -v git >/dev/null 2>&1 || {
+    echo "git命令未找到，请安装git"
+    exit 1
+}
 
 # 使用getopts处理参数
-while getopts ":hb:" opt; do
+while getopts ":hib:" opt; do
     case $opt in
     b) BRANCH="$OPTARG" ;;
+    i) INIT="enable" ;;
     h)
-        echo "使用方法: $0 [-d] [-h]"
-        echo "  -d  开发模式"
-        echo "  -h  显示帮助"
+        echo "使用方法: $0 [-b <branch>] [-ih]"
+        # echo "  -d  开发模式"
+        echo "  -i  初始化配置仓库"
+        echo "  -b  指定分支，默认分支为 dev"
+        echo "  -h  显示帮助, 并退出. 建议放最后一个参数."
         exit 0
         ;;
     \?)
-        echo "无效选项: -$OPTARG" >&2
+        echo "无效选项: -$opt $OPTARG" >&2
         exit 1
         ;;
     esac
@@ -29,17 +40,23 @@ test -f "$HOME"/.config/.bin/.Runtime/SELF_MARK_AS_INSTALLED_FROM_SCRIPT && {
     echo "local.env.ini already exists, end the install. please remove it first if need re-install."
     exit 1
 }
-# == 移走原有配置目录
+# == 移走原有配置目录~/.config到/tmp/.config
 [ -d "/tmp/.config" ] && rm -rf /tmp/.config              # 如果存在, 删除 /tmp/.config
 [ -d "$HOME/.config" ] && mv "$HOME/.config" /tmp/.config # 移动原有 $HOME/.config 配置到 /tmp/.config
-# 克隆，如果失败则退出
+# 克隆，如果失败则退出并恢复原有配置
 git clone --depth 1 --branch "$BRANCH" --single-branch https://gitea.yever.top/Hawkin/.config.git "$HOME"/.config
 test $? -ne 0 && {
     echo "git clone failed, please check your network."
-    # 恢复原有配置
+    # 删除克隆的目录
+    echo "delete the unfinished clone dir: $HOME/.config"
     [ -d "$HOME/.config" ] && rm -rf "$HOME/.config"
-    mv /tmp/.config "$HOME/.config"
-    echo "restored the old config to $HOME/.config"
+    # 恢复原有配置
+    if test -d /tmp/.config; then
+        echo "restoring the old config to $HOME/.config"
+        mv /tmp/.config "$HOME/.config"
+    else
+        echo "no old config found, skip restore config dir."
+    fi
     exit 1
 }
 
@@ -53,4 +70,6 @@ EOF
 echo "git clone success, init project by script itself..."
 
 # = 通过目标仓库的初始化脚本进行初始化
-bash "$HOME"/.config/.bin/bin/Init.sh
+if test "$INIT" = "enable"; then
+    bash "$HOME"/.config/.bin/bin/Init.sh
+fi
diff --git a/readme.md b/readme.md
index 85775ec..0255ec6 100644
--- a/readme.md
+++ b/readme.md
@@ -6,8 +6,16 @@
 
 > 静默但输出错误信息，并跟随重定向
 
+克隆 dev 分支（`-b`，默认）并进行初始化（`-i`）：
+
 ```bash
-curl -sSL https://gitea.yever.top/Hawkin/setup-kit/raw/main/config-os-and-apps.sh | bash
+curl -sSL https://gitea.yever.top/Hawkin/setup-kit/raw/main/config-os-and-apps.sh | bash -- -ib dev
+```
+
+指定分支（`-b`）但不进行初始化：
+
+```bash
+curl -sSL https://gitea.yever.top/Hawkin/setup-kit/raw/main/config-os-and-apps.sh | bash -- -b dev
 ```
 
 或