freeze-dir.sh

   1 #!/bin/bash
   2
   3 #########################################################################
   4 # This program is free software: you can redistribute it and/or modify  #
   5 # it under the terms of the version 3 of the GNU General Public License #
   6 # as published by the Free Software Foundation.                         #
   7 #                                                                       #
   8 # This program is distributed in the hope that it will be useful, but   #
   9 # WITHOUT ANY WARRANTY; without even the implied warranty of            #
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      #
  11 # General Public License for more details.                              #
  12 #                                                                       #
  13 # You should have received a copy of the GNU General Public License     #
  14 # along with this program. If not, see <http://www.gnu.org/licenses/>.  #
  15 #                                                                       #
  16 # Written by and Copyright (C) Francois Fleuret                         #
  17 # Contact <francois@fleuret.org> for comments & bug reports             #
  18 #########################################################################
  19
  20 set -e
  21
  22 [[ ${FREEZE_DIR} ]] || FREEZE_DIR=${HOME}/.backups
  23
  24 if [[ ! -d ${FREEZE_DIR} ]]; then
  25     echo "Can not find directory ${FREEZE_DIR}" >&2
  26     exit 1
  27 fi
  28
  29 while [[ "$1" ]]; do
  30
  31     dir=$(basename "$1")
  32     path=$(dirname "$1")
  33     full_path="${path}/${dir}"
  34
  35     date=$(date +%Y_%b_%d_%H:%M:%S)
  36
  37     if [[ ! -d "${full_path}" ]]; then
  38         echo "Can not find directory ${full_path}" >&2
  39         exit 1
  40     fi
  41
  42     if [[ $(find "${full_path}" -type f -name "core*" -o -name "vgcore.[0-9]*") ]]; then
  43         # rm -i $(find "${full_path}" -type f -name "core" -o -name "vgcore.[0-9]*")
  44         echo "There seems to be core files in ${full_path}" >&2
  45         exit 1
  46     fi
  47
  48     backup="${FREEZE_DIR}/${full_path}"
  49
  50     mkdir -p "${FREEZE_DIR}/${path}"
  51
  52     current_backup="${backup}:::current"
  53     new_backup="${backup}:::${date}"
  54
  55     if [[ -h "${current_backup}" ]]; then
  56         rsync --link-dest="${current_backup}/" -axz "${full_path}/" "${new_backup}/"
  57         rm -f "${current_backup}"
  58     else
  59         if [[ -a ${current_backup} ]]; then
  60             echo "${current_backup} exists and is not a symbolic link" >&2
  61             exit 1
  62         else
  63             rsync -axz "${full_path}/" "${new_backup}/"
  64         fi
  65     fi
  66
  67     ln -s "${new_backup}" "${current_backup}"
  68
  69     sync
  70
  71     du -sh "${new_backup}"
  72
  73     shift
  74
  75 done