Date: Mon, 28 Apr 2003 15:35:02 -0700 From: Tom Smith <tom@openadventures.org> To: DJ Boris <dj_boris@mail.ru> Cc: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: extract IP address and feed it into a command Message-ID: <3EADAC96.6020601@openadventures.org> References: <01de01c30dd1$5c5d4c10$6300a8c0@fmelectro.co.za>
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This is taken from a Linux firewall script I use to determine a Dynamic IP address. In this case, $IFCONFIG, $EXTIF, and $AWK are defined as variables. For reference, IFCONFIG=/sbin/ifconfig, EXTIF=eth0, AWK=/bin/awk. EXTIP="`$IFCONFIG $EXTIF | $AWK $EXTIF/'{next}//{split($0,a,":");split(a[2],a," ");print a[1];exit}'`" I didn't write this script so I don't fully understand what it's doing but maybe it'll lead you in the right direction. DJ Boris wrote: >hi there, > >I am running fBSD 4.7 release. > >I need to extract my IP address which is dynamically assigned by my ISP and >feed it into a serialmail command > >"maildirsmtp ~alias/pppdir alias-ppp- 1.2.3.4 `hostname` " > >which is executed from my ppp.linkup. > >I have to replace hostname with my dynamic IP. > >I know that my IP always starts with zzz.zzz and if I run > >"ifconfig | grep zzz.zzz" > >I get > >inet zzz.zzz.xxx.xxx --> yyy.yyy.yyy.yyy netmask nnnnnnnnnn > >Is there a command or something else that I can use in order to get only the >IP starting with zzz.zzz up to the first space and how do I feed it into the >above command? > >thanx >dj boris > > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > >
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