Elie Rosenblum wrote: > $IPADDR=`ifconfig ppp0|perl -ne 'print $1 if (/inet addr:(\S+)\s/);'` > ipfwadm -A -a -P $IPADDR -D 0/0 It is what I want, thanks, though I found that I don't need '$' for the first line. Lawrence -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to debian-user-request@lists.debian.org . Trouble? e-mail to templin@bucknell.edu .