diff --git a/Makefile b/Makefile
index 986ec52..5da628b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 AS=./install-alias.sh
-
 OS=./install-oh-my-zsh.sh
+SHELL=env zsh
 
 install: 
 
@@ -10,4 +10,6 @@ ohm:
 	chmod +x $(OS) 
 	$(OS) 
 
-alias: chmod +x $(AS) && $(AS)
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+alias: 
+	chmod +x $(AS) 
+	$(SHELL) $(AS)
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diff --git a/install-alias.sh b/install-alias.sh
old mode 100644
new mode 100755
index 15847d1..5e9df41
--- a/install-alias.sh
+++ b/install-alias.sh
@@ -1,45 +1,36 @@
 # shellcheck shell=ksh
+rc_file="$HOME/.zshrc"
+alias_init_file="$HOME/alias.d/.init"
 
-AHome="$HOME/alias.d"
-if [ ! -f "$AHome" ];then
-echo "将创建 ~/.alias.d 用于存放自定义快捷方式"
+# if rc_file contains "sourece $alias_init_file" 询问是否覆盖
 
-mkdir "$AHome"
-fi
+_check() {
+  if grep -q "source $alias_init_file" "$rc_file"; then
+    # 如果包含，则询问是否覆盖
+    echo "看起来设备已经安装 alias, $rc_file 中包含 source $alias_init_file"
+    echo -n "请输入（y/n）:"
+    read -r _continue
+    echo "in >> $_continue"
+    case "$_continue" in
+    y | Y) # 如果输入 y 或 Y，则用 sed 命令删除 source $alias_init_file 这一行
+      sed -i "/source $alias_init_file/d" $rc_file
+      echo "覆盖 source $alias_init_file"
+      ;;
+    *)
+      echo "退出安装"
+      exit 3
+      ;;
+    esac
+  fi
 
-init_shell="$AHome/.init"
-echo alias in "$AHome"
-echo "" > "$init_shell"
+  echo "安装 alias.d 正在自动配置环境变量... source $alias_init_file"
+}
 
-echo '# set PATH so it includes user`s private bin if it exists' >> "$init_shell"
-echo 'if [ -d "$HOME/bin" ] ; then' >> "$init_shell"
-echo '	PATH="$HOME/bin:$PATH"' >> "$init_shell"
-echo 'fi' >> "$init_shell"
-echo '' >> "$init_shell"
-echo '# set PATH so it includes user`s private bin if it exists' >> "$init_shell"
-echo 'if [ -d "$HOME/.local/bin" ] ; then' >> "$init_shell"
-echo '	PATH="$HOME/.local/bin:$PATH"' >> "$init_shell"
-echo 'fi' >> "$init_shell"
-echo '' >> "$init_shell"
-echo '# set PATH so it includes user`s private bin if it exists' >> "$init_shell"
-echo 'if [ -d "$HOME/go/bin" ] ; then' >> "$init_shell"
-echo '        PATH="$HOME/go/bin:$PATH"' >> "$init_shell"
-echo 'fi' >> "$init_shell"
-echo "setopt no_nomatch" >> "$init_shell"
+_install() {
+  rsync -a --backup --suffix=.bak ./alias.d "$HOME/"
+  echo "install success, enjoy it!"
+  source "$alias_init_file"
+}
 
-echo '# 遍历' >> "$init_shell"
-echo '# for item in `ls ~/.alias.d/*.sh`; do' >> "$init_shell"
-echo '# 	source $item' >> "$init_shell"
-echo '# done' >> "$init_shell"
-echo 'export AHome="$HOME"/.alias.d' >> "$init_shell"
-echo 'for ali in "$AHome"/*.sh' >> "$init_shell"
-echo 'do' >> "$init_shell"
-echo '	[[ -e "$ali" ]] || break  # 无 alias 停止' >> "$init_shell"
-echo '	source "$ali"' >> "$init_shell"
-echo 'done' >> "$init_shell"
-
-echo "#common config" >> "$init_shell"
-echo "alias va='vim ~/.alias.d'" >> "$init_shell"
-echo "alias vz='vim ~/.zshrc'" >> "$init_shell"
-echo "alias rez='source ~/.zshrc'" >> "$init_shell"
-echo "source "$init_shell"" >> ~/.zshrc
\ No newline at end of file
+_check
+_install
\ No newline at end of file