prueba.sh

hola=$(for d in /tmp/bareos-restores/_percona/250/*/xtrabackup_info; do
  printf '%s\t%s\n' "$(grep start_time "$d")" "$(basename "$(dirname "$d")")"
  done | sort | cut -f2-)
  
  for a in $hola; do
    array=("${array[@]}" "$a")
  done
  
  echo ${array[@]}