Display Secods as Time

function displaytime {
  local T=$1
  local D=$((T/60/60/24))
  local H=$((T/60/60%24))
  local M=$((T/60%60))
  local S=$((T%60))
  (( $D > 0 )) && printf '%d Tage ' $D
  (( $H > 0 )) && printf '%d Stunden ' $H
  (( $M > 0 )) && printf '%d Minuten ' $M
  (( $D > 0 || $H > 0 || $M > 0 )) && printf 'und '
  printf '%d Sekunden\n' $S
}