On 2026-01-08, Michael P. Soulier wrote: > Is there a way to run a script when an interface comes up when using > NetworkManager? The post-up hook in interfaces is great, but I'm trying to run > an ethtool command when I plug into my docking station and suddenly it's > ethernet interface is available.
You can put any command in post-up or if you prefer you can add a script in /etc/network/if-up.d such this one: $ cat /etc/network/if-up.d/postfix #! /bin/sh # update postfix copy of resolv.conf (picked up automatically); only default instance is handled [ lo != "$IFACE" ] && cp -pLu /etc/resolv.conf /var/spool/postfix/etc/resolv.conf 2>/dev/null || :
