在Linux中怎样移除(删除)符号链接

在Linux中怎样移除(删除)符号链接

你可能有时需要在 Linux 上创建或者删除符号链接。如果有,你知道该怎样做吗?之前你做过吗?你踩坑没有?如果你踩过坑,那没什么问题。如果还没有,别担心,我们将在这里帮助你。

使用 rmunlink 命令就能完成移除(删除)符号链接的操作。

什么是符号链接?

符号链接(symlink)又称软链接,它是一种特殊的文件类型,在 Linux 中该文件指向另一个文件或者目录。它类似于 Windows 中的快捷方式。它能在相同或者不同的文件系统或分区中指向一个文件或着目录。

符号链接通常用来链接库文件。它也可用于链接日志文件和挂载的 NFS(网络文件系统)上的文件夹。

什么是 rm 命令?

rm 命令 被用来移除文件和目录。它非常危险,你每次使用 rm 命令的时候要非常小心。

什么是 unlink 命令?

unlink 命令被用来移除特殊的文件。它被作为 GNU Gorutils 的一部分安装了。

1) 使用 rm 命令怎样移除符号链接文件

rm 命令是在 Linux 中使用最频繁的命令,它允许我们像下列描述那样去移除符号链接。

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> symlinkfile</span>

始终将 rm 命令与 -i 一起使用以了解正在执行的操作。

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i symlinkfile1</span>
  2. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkfile1</span><span class="pun">’?</span><span class="pln"> y</span>

它允许我们一次移除多个符号链接:

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i symlinkfile2 symlinkfile3</span>
  2.  
  3. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkfile2</span><span class="pun">’?</span><span class="pln"> y</span>
  4. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkfile3</span><span class="pun">’?</span><span class="pln"> y</span>

1a) 使用 rm 命令怎样移除符号链接目录

这像移除符号链接文件那样。使用下列命令移除符号链接目录。

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i symlinkdir</span>
  2.  
  3. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">’?</span><span class="pln"> y</span>

使用下列命令移除多个符号链接目录。

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i symlinkdir1 symlinkdir2</span>
  2.  
  3. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkdir1</span><span class="pun">’?</span><span class="pln"> y</span>
  4. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove symbolic </span><span class="kwd">link</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkdir2</span><span class="pun">’?</span><span class="pln"> y</span>

如果你在结尾增加 /,这个符号链接目录将不会被删除。如果你加了,你将得到一个错误。

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i symlinkdir</span><span class="pun">/</span>
  2.  
  3. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> cannot remove </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">/’:</span><span class="pln"> </span><span class="typ">Is</span><span class="pln"> a directory</span>

你可以增加 -r 去处理上述问题。但如果你增加这个参数,它将会删除目标目录下的内容,并且它不会删除这个符号链接文件。(LCTT 译注:这可能不是你的原意。)

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">rm</span><span class="pln"> </span><span class="pun">-</span><span class="pln">ri symlinkdir</span><span class="pun">/</span>
  2.  
  3. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> descend into directory </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">/’?</span><span class="pln"> y</span>
  4. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove regular </span><span class="kwd">file</span><span class="pln"> </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">/</span><span class="pln">file4</span><span class="pun">.</span><span class="pln">txt</span><span class="pun">’?</span><span class="pln"> y</span>
  5. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> remove directory </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">/’?</span><span class="pln"> y</span>
  6. <span class="kwd">rm</span><span class="pun">:</span><span class="pln"> cannot remove </span><span class="pun">‘</span><span class="pln">symlinkdir</span><span class="pun">/’:</span><span class="pln"> </span><span class="typ">Not</span><span class="pln"> a directory</span>

2) 使用 unlink 命令怎样移除符号链接

unlink 命令删除指定文件。它一次仅接受一个文件。

删除符号链接文件:

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">unlink</span><span class="pln"> symlinkfile</span>

删除符号链接目录:

  1. <span class="com">#</span><span class="pln"> </span><span class="kwd">unlink</span><span class="pln"> symlinkdir2</span>

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