net/mac-to-devinfo/files/ip-to-devinfo

   1 #!/bin/sh
   2
   3 ARP=arp
   4 MACTODEV=mac-to-devinfo
   5
   6 IP=$1
   7
   8 if [ -z "$IP" ]; then
   9         echo "Must specify IP address"
  10 fi
  11
  12 if [ ! -x "$(which $ARP)" ]; then
  13     do_arp() {
  14         cat /proc/net/arp
  15     }
  16     ARPMACFIELD=4
  17 else
  18     do_arp() {
  19         $ARP -n
  20     }
  21     ARPMACFIELD=3
  22 fi
  23
  24 ping -q -c 2 $IP >/dev/null
  25 MAC=$(do_arp|grep "$IP "|tr -s \  | cut -f$ARPMACFIELD -d\  )
  26
  27 $MACTODEV $MAC
  28
  29