Epoch to Date inline replace for unix cli

epoch.sh

#!/usr/bin/env bash

# Note: this works for dates Sat Sep  8 21:46:40 EDT 2001 onward to Nov 2286.
#
# Usage: 
# echo 'Awesome example 1316716805 to 1330000000 with data' | ~/epoch
# Awesome example Thu Sep 22 14:40:05 EDT 2011 to Thu Feb 23 07:26:40 EST 2012 with data
#

<<LICENSE
Copyright (c) 2012, shadowbq@gmail.com
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTOR BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.

LICENSE

while read line; do
   while [[ "$line" =~ \([0-9]\{10\}\) ]]; do
     eptime=`echo $line | grep -Eo "[0-9]{10}"|head -1`;
     htime=`date -d @$eptime`
     line=`echo $line | sed "s/\([\D]*\)\([0-9]\{10\}\)\([\D]*\)/\1$htime\3/";`
   done
   echo $line
done