Encountered several times so better write it down here – in case you want to write messages to syslog facility, you can do “echo something | logger”, sure logger has lots of options to specify facility and priority etc.
logger should be part of Linux base package as I checked (util-linux-ng for CentOS, util-linux for Fedora, and bsdutils for Ubuntu).
BTW, dpkg -S <file> shows the package who owns the file.