# Set up array for all IP addresses
IPADDRS=""
COUNTER=0

for EACH in `ifconfig -a`; do
   # Look for four sets of grouped numbers separated by periods.
   # Groups are between 1 and 3 digets in size and consist of numbers only.
   IPADDRS[$COUNTER]=`echo $EACH | egrep [0-9]\{1,3\}"\."[0-9]\{1,3\}"\."[0-9]\{1,3\}"\."[0-9]\{1,3\}`
   
   # Increment counter
   COUNTER=$(( $COUNTER + 1 ))
done

# Set up array for all IP addresses
IPADDRS=""
COUNTER=0

for EACH in `ifconfig -a`; do
   # Look for four sets of grouped numbers separated by periods.
   # Groups are between 1 and 3 digets in size and consist of numbers only.
   # I.E. A standard IP address
   IPADDRS[$COUNTER]=`echo $EACH | egrep [0-9]\{1,3\}"\."[0-9]\{1,3\}"\."[0-9]\{1,3\}"\."[0-9]\{1,3\}`
   
   # If something was found, increment counter
   if [[ ${IPADDRS[$COUNTER]} ]]; then
      COUNTER=$(( $COUNTER + 1 ))
   fi
done