feedback

#!/bin/bash

################################################################################

#Functions

function info {
  echo "Usage: [-h] [-c #] [directory]"
}

function guide {
    echo "1- eth0, 2 - lo, 3 - Default Gateway"
}
function error-message {
 echo "An error has occured!" >&1
}

function which {

while [ "$whatint" = 0 ]; do

    read -p "What interface would you like to look at? " input1

        whatint=input1

        #Test statements for if the value of $whatint is non-existant, has a value of 0, or ir less than 0. If any are true, do the following.
        if [ "$whatint" = 1 ]; then
            echo "Interface ${intname[0]} has address ${iparray[0]}"
            exit 1
        fi

        if [[ "$whatint" = 2 ]]; then
            echo "Interface ${intname[1]} has address ${iparray[1]}"
            exit 1
        fi

        if [ $whatint = 3 ]; then
            gateway=`route -n|grep '^0.0.0.0 '|awk '{print $2}'`

            echo "Default gateway is $gateway"
        fi
done
}

################################################################################

#Variables / Declarations

declare -i whatint

#declare interface array
declare -a iparray

defaultroute="false"
whatint=0

################################################################################

#Commence while loop.

while [ $# -gt 0 ]; do
    case "$1" in
    -h )
        info
        exit 0
        ;;
   -r )
   defaultroute="true"
    ;;
    * )
        info
        error-message "Argument '$1' not recognized"
        exit 2
        ;;
    esac
    shift
done

################################################################################

#Main

intname=(`ifconfig |grep '^[a-zA-Z]'|awk '{print $1}'`)

iparray[0]=`ifconfig ${intname[0]} | grep 'inet addr' | sed -e 's/  *inet addr://' | sed -e 's/ .*//'`
iparray[1]=`ifconfig ${intname[1]} | grep 'inet addr' | sed -e 's/  *inet addr://' | sed -e 's/ .*//'`

guide
which

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