#!/usr/dt/bin/dtksh

set -e
[[ -n ${BASH_VERSION} ]] && shopt -s extglob

function mk_dest {
  typeset    dest=$1
  typeset -i copy=$2
  typeset dt=$(date "+%Y-%m-%dT%H:%M:%S")

  (( copy <= 0 )) && return 1

  set -- ${dest}/+([0-9])-+([0-9])-+([0-9])T+([0-9]):+([0-9]):+([0-9])
  [[ -r $1 ]] || set --

  if (( $# >= copy )); then
     (( $# >  copy )) && rm -rf ${@:1:$#-copy}
     mv ${@:$#-copy+1:1} ${dest}/$dt
  else
     mkdir -p ${dest}/$dt
  fi
  printf "%s\n" ${dest}/$dt
}

PATH=$(PATH=/bin:/usr/bin getconf PATH)

for i; do eval ${i}; done

mk_dest ${dest} ${copy} | {
  read i && rsync -av --delete ${src} ${i}
}