什么是Unix命令创建一个硬连接到OS X目录？ [英] What is the Unix command to create a hardlink to a directory in OS X?

问题描述

如何创建一个硬连接（而不是一个符号或Mac OS化名）在OS X中指向的目录？我已经知道命令LN目标位置，但只有当目标是一个文件工作。我知道的Mac OS，不像其他的Unix环境下，确实让hardlinking文件夹（这是用于时间机器，例如），但我不知道该怎么做我自己。

How do you create a hardlink (as opposed to a symlink or a Mac OS alias) in OS X that points to a directory? I already know the command "ln target destination" but that only works when the target is a file. I know that Mac OS, unlike other Unix environments, does allow hardlinking to folders (this is used for Time Machine, for example) but I don't know how to do it myself.

推荐答案

您不能直接在bash做的话。不过......我在这里找到了一篇文章，讨论如何做到这一点间接：<一href=\"http://www.mactech.com/articles/mactech/Vol.23/23.11/ExploringLeopardwithDTrace/index.html\">http://www.mactech.com/articles/mactech/Vol.23/23.11/ExploringLeopardwithDTrace/index.html通过编写一个简单的小的C程序：

You can't do it directly in BASH then. However... I found an article here that discusses how to do it indirectly: http://www.mactech.com/articles/mactech/Vol.23/23.11/ExploringLeopardwithDTrace/index.html by compiling a simple little C program:

#include <unistd.h>
#include <stdio.h>

int main(int argc, char *argv[])
{
   if (argc != 3) return 1;

   int ret = link(argv[1], argv[2]);

   if (ret != 0) perror("link");

   return ret;
}

...在Terminal.app与构建：

...and build in Terminal.app with:

$ gcc -o hlink hlink.c -Wall

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