find_usb_path.bash

#!/bin/bash
#******************************************************************************

#    OpenAirInterface 
#    Copyright(c) 1999 - 2014 Eurecom

#    OpenAirInterface is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.


#    OpenAirInterface is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.

#   You should have received a copy of the GNU General Public License
#   along with OpenAirInterface.The full GNU General Public License is 
#   included in this distribution in the file called "COPYING". If not, 
#   see <http://www.gnu.org/licenses/>.

#  Contact Information
#  OpenAirInterface Admin: openair_admin@eurecom.fr
#  OpenAirInterface Tech : openair_tech@eurecom.fr
#  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
  
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# *******************************************************************************/
# \author Navid Nikaein, Rohit Gupta


#arg1 idVendor
#arg2 idProduct
argIdVendor=$1
argIdProduct=$2

echo $1
echo $2

for X in /sys/bus/usb/devices/*; do 
    #echo "$X"
    idVendor=`cat "$X/idVendor" 2>/dev/null` 
    idProduct=`cat "$X/idProduct" 2>/dev/null`
    if [ "$argIdVendor" == "$idVendor" ] && [ "$argIdProduct" == "$idProduct" ]
    then
      echo "$X"
    fi
done