在删除符号链接libc.so.6之后如何恢复?

In our server the symbolic link to libc.so.6 has been deleted. Now none of the binaries in the system work. To fix this, I tried:

在我们的服务器中，符号链接到libc.so。6已被删除。现在系统中的二进制文件都没有工作。为了解决这个问题，我尝试了:

/bin/ln -s /lib/libc-2.11.3.so /lib/libc.so.6

which, as expected, gives me:

正如预期的那样，这给了我:

/bin/ln: error while loading shared libraries: libc.so.6: 
    cannot open shared object file: No such file or directory

I also tried:

我也试过:

/lib/ld-linux-x86-64.so.2  --inhibit-rpath /lib/libc.so.6 \
   --library-path /lib/libc-2.11.3.so \
   /bin/ln -s /lib/libc-2.11.3.so /lib/libc.so.6

with the same result. Further unsuccessful attempts include cp, mv, cat.

与相同的结果。进一步的失败尝试包括cp, mv, cat。

I'm connected via ssh and I believe I will not be able to open another session after closing this one. Is there a way to fix this system (using bash built-ins perhaps)?

我是通过ssh连接的，我相信在关闭这个程序后我将无法打开另一个会话。是否有办法修复这个系统(可能使用bash内置)?

[edit] I did:

[编辑]我做:

while read line; do echo $line; done < /lib/libc-2.11.3.so > libc.so.6

to copy the file and tried with:

复制文件并尝试:

/lib/ld-linux-x86-64.so.2  --inhibit-rpath libc.so.6 --library-path . \
  /bin/ln -s /lib/libc-2.11.3.so /lib/libc.so.6

and got:

和有:

/bin/ln: error while loading shared libraries: ./libc.so.6: ELF file OS ABI invalid

6 个解决方案

#1

You could simply run ldconfig. Most distributions ship this as a static binary.

您可以简单地运行ldconfig。大多数发行版都将其作为静态二进制文件。

#2

This helped in my case (the actual version depends on your library):

这对我的情况有帮助(实际的版本依赖于您的库):

ldconfig -l -v /lib/libc-2.13.so

#3

Try:

试一试:

LD_PRELOAD=/lib/libc-2.17.so ln -s /lib/libc-2.17.so /lib/libc.so.6

Note: The actual version depends on your library.

注意:实际的版本取决于您的库。

#4

Boot using a live cd like Knoppix or whatever and fix the missing link after mounting the disk with the "broken" system out of the running live system.

使用像Knoppix这样的live cd或任何其他的方法来启动，并在将磁盘安装到运行的实时系统中的“坏”系统后修复丢失的链接。

#5

Note, for 64 bit:

注意,64位:

LD_PRELOAD=libc-2.13.so ln -s libc-2.13.so libc.so.6

LD_PRELOAD = libc - 2.13。所以ln - s libc - 2.13。所以libc.so.6

This worked great for me

这对我来说很有用。

If you are not in that directory of course it will be something like:
LD_PRELOAD=/lib/x86_64-linux-gnu/libc-2.13.so ln -s /lib/x86_64-linux-gnu/libc-2.13.so /lib/x86_64-linux-gnu/libc.so.6

如果您不在该目录中，它将会是:LD_PRELOAD=/lib/x86_64- linuxgnu /libc-2.13。所以ln - s /lib/x86_64-linux-gnu / libc - 2.13。所以/lib/x86_64-linux-gnu / libc.so.6

#6

If you had done an ls command previously and know what the version of the libc is,

如果你之前做过ls命令并且知道libc的版本是什么，

ldconfig -l -v /lib64/libc-2.x.so

where x is your version works. Note that it could be a lib64 or lib depending on your version.

其中x是你的版本。注意，它可以是lib64或lib，这取决于您的版本。

I just did this and it worked.

我就是这么做的。

In short, never delete the link. Bad idea.

简而言之，永远不要删除链接。坏主意。

#1