libx11-6 2:1.6.4-3ubuntu0.1 / usr / lib / x86_64-linux-gnu / libX11.so.6

/usr/lib/x86_64-linux-gnu/libX11.so.6 is in libx11-6 2:1.6.4-3ubuntu0.1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0