#!/bin/sh

# Sort by IP address.  Assume IP address is at front of line.
# Options:
# -u  remove duplicates (its fairly random which line is kept if text follows IP)

# Copyright 2005 Thomas A. Limoncelli
# 
#     This program 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 2 of the License, or
#     (at your option) any later version.
#     This program 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 this program; if not, write to the Free Software
#     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

otheroptions=""
uniqcmd="cat"
while [ -n "$1" ]
do
    if [ "$1" = "-u" ]
    then
        uniqcmd="uniq"
    else
        otheroptions="$otheroptions $1"
    fi
    shift
done
            
sort -t. -k1,1n -k2,2n -k3,3n -k4,4n $otheroptions | $uniqcmd

