Abd*_*red 28 linux libraries ffmpeg etc shared-library
我的问题源于我在启动 ffmpeg 时遇到的问题。我已经安装了 ffmpeg，它显示为已安装：
whereis ffmpeg
ffmpeg: /usr/bin/ffmpeg /usr/bin/X11/ffmpeg /usr/share/ffmpeg /usr/share/man/man1/ffmpeg.1.gz
后来，我发现，有些程序依赖于安装本身没有的库，所以我用 ldd 命令检查了缺少什么：
# ldd /usr/bin/ffmpeg
linux-vdso.so.1 => (0x00007fff71fe9000)
libavfilter.so.0 => not found
libpostproc.so.51 => not found
libswscale.so.0 => not found
libavdevice.so.52 => not found
libavformat.so.52 => not found
libavcodec.so.52 => not found
libavutil.so.49 => not found
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f5f20bdf000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f5f209c0000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f5f205fb000)
/lib64/ld-linux-x86-64.so.2 (0x00007f5f20f09000)
事实证明，我的 ffmpeg 也被 7 个库切断了。我首先认为必须安装这些库中的每一个，但比我想象的要安装一些或全部，但 ffmpeg 不知道它们的位置。我读到 /etc/ld.so.conf 和 /etc/ld.so.cache 包含库的路径，但我很困惑，因为只有一行
/etc/ld.so.conf
cat /etc/ld.so.conf
include /etc/ld.so.conf.d/*.conf
但是很长/etc/ld.so.cache。
我现在正处于迷失如何进一步调查的地步，弄清楚如何确定是否确实安装了给定的库，即使它的位置对 ffmpeg 未知，这可能是一个有用的下一步。
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Pinned packages:
tal*_*zin 41
您可以使用：
ldconfig -p | grep libavfilter
如果没有输出库是不安装的。我不确定这是否 100% 可靠。
至少在ldconfig选项 -p 的手册页中：
打印存储在当前缓存中的目录和候选库列表。
在 /usr/lib 和 /usr/lib64 中查找这些库。如果您发现 ffmpeg 中的一个丢失，请对其进行符号链接，使其存在于另一个目录中。
您还可以运行“libm.so.6”的查找并查看该文件的位置。ffmpeg 很有可能在同一目录中查找丢失的目录。找到它们后，将它们符号链接到那里。
如果您的服务器上不存在它们，请安装包含它们的软件包。如果它们包含在 ffmpeg 包中但您没有看到它们，请尝试重新安装 ffmpeg。