本文章更新于 2017.11.12，如果本节更新内容与下面小节的内容不一致，以这个小节为准。
As the saying goes, a picture is worth a thousand words. Here is how I visualize it:
If%20you%20don’t%20know%20what%20inode%20is,%20please%20refer%20to%20wikipedia%20page%20about%20it.%20The%20picture%20above%20tells%20us%20a%20hard%20link%20just%20creates%20another%20file%20with%20a%20link%20to%20the%20same%20underlying%20inode.%20Therefore,%20if%20you%20want%20to%20delete%20the%20inode,%20then%20you%20have%20to%20delete%20all%20the%20links%20to%20it.%20For%20a%20soft%20link,%20if%20you%20delete%20or%20rename%20myfile.txt%20will%20invalidate%20it%20and%20cause%20it%20can’t%20find%20inode.%20Let%20me%20show%20you%20an%20example.%20You%20will%20understand%20it%20deeply.
I created a directory named lnte in my Ubuntu os and printed its apparent sizes in byte by typing following command:
du -b lnte
And you would see that it take up 4096 bytes. As shown in the picture below, you may find that a hard link doesn’t occupy any space on disk whereas a soft link indeed consumes 5-bytes space.
首先，我在我的target目录下创建了文件lovedog.txt，并写了一行文字，如下图：
当我们去target目录中看lovedog.txt文件时，内容也发生了变化。同样的道理，我可以创建很多个软链接指向lovedog.txt，如下图：
我们可以通过下图的命令来创建硬链接：
