solaris nic check script

http://www.darklab.net/resources/solaris-unix-tips/nic_check.txt

#!/bin/ksh
#set -xv
#
# nic_check - 01/12/2001 - David Cashion
#
# Defaults to give interface info on hme0, but you can provide a different one.
# NOTE: Needs to be run as root.
#
# Usage: nic_check [INTERFACEinstance]
#
# Example: nic_check hme0
# nic_check qfe1
#

#### Pick the interface given or default to hme0
if [[ $# -eq 1 ]]; then
interface=$(echo $1 | cut -c1-3)
int_inst=$(echo $1 | cut -c4)
else
interface=hme
int_inst=0
fi


#### First we have to select the interface and instance
if [[ -n $(/usr/sbin/ndd -set /dev/$interface instance $int_inst) ]]; then
print "ERROR: No such animal: ${interface}$int_inst"
exit 1
fi

print "Results for ${interface}$int_inst"
echo "---------------------"

#### 0=internal, 1=external
print -n "Transciever: "
[[ $(/usr/sbin/ndd -get /dev/$interface transceiver_inuse) -eq 0 ]] && print "internal" || print "external"

#### 0=down, 1=up
print -n "Link: "
[[ $(/usr/sbin/ndd -get /dev/$interface link_status) -eq 0 ]] && print "down" || print "up"

#### 0=10Mb, 1=100Mb
print -n "Speed: "
[[ $(/usr/sbin/ndd -get /dev/$interface link_speed) -eq 0 ]] && print "10Mb" || print "100Mb"

#### 0=half, 1=full duplex
print -n "Duplex: "
[[ $(/usr/sbin/ndd -get /dev/$interface link_mode) -eq 0 ]] && print "half\n" || print "full\n"