#!/user/bin/env python2
# -- coding: utf-8 --  

import os

tmp_string = os.popen('ip link|egrep "^[0-9]+"|cut -d ":" -f 2 |awk {"print $1"} |grep -v lo').read();
tmp_string = tmp_string.strip();

array_interfaces=[];
array_interfaces[:]= tmp_string.split("\n");

print ('Seleccione interfaz de red:')
print ('---------------------------------')

i=0
for i in range(len(array_interfaces)):
    print(str(i) + ') ' + array_interfaces[i].strip())
    i=i+1

interfaz_index = (input(">> "));
global interfaz
interfaz = array_interfaces[interfaz_index];
interfaz = interfaz.strip();

print "Usted ha seleccionado:" + interfaz;

nada = (raw_input(">> "));