shell script to make date stamped backup copies

   #!/bin/sh
   #
   #  make standard-ish datestamped backup copies of files
   #    getopts: see "Learning the Korn Shell 2nd ed" 6.1.3 getopts
   #

   DT=`date +"%Y%m%d"`
   VERBOSE=0

   while getopts "tv" opt; do
       case $opt in
            t  ) DT=`date +"%Y%m%d.%H%M"` ;;
            v  ) VERBOSE=1 ;;
            \? ) echo 'usage: bcp [-t] args ...'; exit 1;;
       esac
   done
   shift $(($OPTIND - 1))

   for F in $* ; do
       if [ "$VERBOSE" = "1" ] ; then echo "cp $F $F.$DT" ; fi
       cp $F $F.$DT
   done