#! /bin/bash 
#
# Toomas Karmo 
# http://www.metascientia.com 
#
#
# invocation:
# ./b filename  (on the assumption that the script is named b) 
#
#
# given filename foo.bar, 
# create a backup copy foo.bar_CCYYMMDDThhmmssZ, 
# where CCYYMMDDThhmmssZ is current Coordinated Universal Time
# timestamp 
#
cp $1 ${1}____BAK$(date -u "+%Y%m%dT%H%M%SZ")
ls -1 ${1}*