File README.SUSE of Package gnokii
to avoid need for suid bit, serial ports are opened by resmgr suppose your user name is "joesix" all you need to do is to issue the following two commands: # echo "allow modem user=joesix" > /etc/resmgr.conf.d/60-joesix.conf # rcresmgr restart see /usr/share/doc/packages/resmgr/ for more information