Linux 有没有办法检查是否有指向目录的符号链接？
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Is there a way to check if there are symbolic links pointing to a directory?
提问by nickf
I have a folder on my server to which I had a number of symbolic links pointing. I've since created a new folder and I want to change all those symbolic links to point to the new folder. I'd considered replacing the original folder with a symlink to the new folder, but it seems that if I continued with that practice it could get very messy very fast.
我的服务器上有一个文件夹，我有许多符号链接指向该文件夹。我已经创建了一个新文件夹，我想更改所有这些符号链接以指向新文件夹。我曾考虑用新文件夹的符号链接替换原始文件夹，但似乎如果我继续这种做法，它可能会很快变得非常混乱。
What I've been doing is manually changing the symlinks to point to the new folder, but I may have missed a couple.
我一直在做的是手动更改符号链接以指向新文件夹，但我可能错过了一些。
Is there a way to check if there are any symlinks pointing to a particular folder?
有没有办法检查是否有指向特定文件夹的符号链接？
采纳答案by skymt
I'd use the find command.
我会使用 find 命令。
find . -lname /particular/folder
That will recursively search the current directory for symlinks to /particular/folder. Note that it will only find absolute symlinks. A similar command can be used to search for all symlinks pointing at objects called "folder":
这将递归搜索当前目录的符号链接到/particular/folder. 请注意，它只会找到绝对符号链接。类似的命令可用于搜索指向名为“文件夹”的对象的所有符号链接：
find . -lname '*folder'
From there you would need to weed out any false positives.
从那里你需要清除任何误报。
回答by bfabry
find / -lname 'fullyqualifiedpathoffile'
回答by paxdiablo
For hardlinks, you can get the inode of your directory with one of the "ls" options (-i, I think).
对于硬链接，您可以使用“ls”选项之一（-i我认为）获取目录的 inode 。
Then a findwith -inumwill locate all common hardlinks.
然后findwith-inum将定位所有常见的硬链接。
For softlinks, you may have to do an ls -lon all files looking for the text after "->" and normalizing it to make sure it's an absolute path.
对于软链接，您可能必须ls -l在所有文件上查找“->”之后的文本并将其规范化以确保它是绝对路径。
回答by Greg Hewgill
There isn't really any direct way to check for such symlinks. Consider that you might have a filesystem that isn't mounted all the time (eg. an external USB drive), which could contain symlinks to another volume on the system.
确实没有任何直接的方法来检查此类符号链接。考虑到您的文件系统可能没有一直挂载（例如，外部 USB 驱动器），其中可能包含指向系统上另一个卷的符号链接。
You could do something with:
你可以做一些事情：
for a in `find / -type l`; do echo "$a -> `readlink $a`"; done | grep destfolder
I note that FreeBSD's finddoes not support the -lnameoption, which is why I ended up with the above.
我注意到 FreeBSDfind不支持该-lname选项，这就是我以上述方式结束的原因。
回答by stephanea
Apart from looking at all other folders if there are links pointing to the original folder, I don't think it is possible. If it is, I would be interested.
除了查看所有其他文件夹是否有指向原始文件夹的链接之外，我认为这是不可能的。如果是的话，我会感兴趣的。
回答by no1uknow
find . -type l -printf '%p -> %l\n'
回答by JJK
You can audit symlinks with the symlinksprogramwritten by Mark Lord -- it will scan an entire filesystem, normalize symlink paths to absolute form and print them to stdout.
您可以使用Mark Lord 编写的symlinks程序审核符号链接——它将扫描整个文件系统，将符号链接路径规范化为绝对形式并将它们打印到标准输出。
回答by Lunar Mushrooms
find /foldername -type l -exec ls -lad {} \;
