Description of problem: I noticed errors from udev when debugging unrelated issue Version-Release number of selected component (if applicable): sh# rpm -qf /usr/lib/systemd/systemd-udevd /usr/lib/udev/rules.d/84-nm-drivers.rules systemd-udev-243~rc1-2.fc31.x86_64 NetworkManager-1.20.0-1.fc31.x86_64 How reproducible: Deterministic Steps to Reproduce: 1. boot your machine with NM enabled 2. check journald for errors from systemd-udev Actual results: [root@host ~]# journalctl --boot | grep udev | grep 84-nm-drivers Aug 13 10:04:09 host.example.com systemd-udevd[944]: /usr/lib/udev/rules.d/84-nm-drivers.rules:10 Invalid value "/bin/sh -c 'ethtool -i $1 | sed -n s/^driver:\ //p' -- $env{INTERFACE}" for PROGRAM (char 24: invalid substitution type), ignoring, but please fix it. Expected results: No errors in journald Additional info:
Thanks for the report. Fixed upstream. Closing, because this is only a cosmetic issue really.