./server: error while loading shared libraries: libmysqlclient.so.20: cannot open shared object file: No such file or directory

这个错误提示"./server: error while loading shared libraries: libmysqlclient.so.20: cannot open shared object file: No such file or directory"表示在加载共享库libmysqlclient.so.20时出现了错误，系统找不到该文件。这种错误通常发生在应用程序依赖的共享库文件找不到或无法加载的情况下。

一种解决方法是通过在/etc/ld.so.conf文件中添加libmysqlclient.so.20所在的目录来告诉系统该文件的位置。这可以通过使用文本编辑器打开/etc/ld.so.conf文件并在其中添加共享库文件所在目录的路径来完成。

然后，运行命令sudo ldconfig来更新系统库缓存。这将使系统能够找到并加载所需的共享库文件。

另一种解决方法是使用LD_LIBRARY_PATH环境变量来指定共享库文件所在的目录。您可以通过在终端中运行以下命令来设置LD_LIBRARY_PATH环境变量：

export LD_LIBRARY_PATH=/path/to/directory

将/path/to/directory替换为包含libmysqlclient.so.20文件的目录的实际路径。

这样，当您运行./server时，系统将能够找到并加载所需的共享库文件。

请注意，这些解决方法假设您已经正确安装了libmysqlclient.so.20文件，并且该文件确实存在于系统中的某个位置。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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