$ sed -n -r \ -e 's/^#.*//' \ -e 's/[[:space:],]NAME="(eth[0-9]*)"[[:space:]]*(,.*|\\|)$/\1/p' \ /dev/null /etc/udev/rules.d/70-persistent-net.rules SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:16:41:e2:8d:c7", ATTR{type}=="1", KERNEL=="eth*",eth4 $ sed -n -r \ -e 's/^#.*//' \ -e 's/.*[[:space:],]NAME="(eth[0-9]*)".*/\1/p' \ /dev/null /etc/udev/rules.d/70-persistent-net.rules eth4
Fix an error message displayed by write_net_rules when the rules file does not exist yet. (See Debian bugs #442796 and #475699.) Ignore commented rules, at least for the easy case. For clarity, use extended instead of standard regular expressions.
