/usr/share/red5/lib/jul-to-slf4j.jar is in red5-server 1.0~svn4374-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/red5/lib/../../java/jul-to-slf4j.jar
/usr/share/red5/lib/../../java/jul-to-slf4j.jar