在 shell 函数中调用内置函数时防止递归

Question

我在 bashrc 中添加了以下功能：-

function cd(){
        echo "user switching to" 
        cd 
}

重新加载 .bashrc 后，尝试 cd 进入临时目录（任何目录）会出现以下递归错误：-

user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
bash: echo: write error: Bad address
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/
user switching to temp/

我希望方法名称是 cd，因为我想在用户使用 cd 命令时执行一些逻辑。

Answer 1

您可以在bash中使用builtin命令：

function cd(){
        echo "user switching to "
        builtin cd "$@"
}

在 shell 函数中调用内置函数时防止递归

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