编写shell脚本将VPS上的数据备份到Dropbox网盘的方法

看到有人用dropbox备份网站数据，所以今天也试了一下，记得以前是一个python脚本，这是用的是bash 脚本，利用dropbox的api来上传下载的，很方便，脚本的地址是Dropbox-Uploader/dropbox_uploader.sh at master · andreafabrizi/Dropbox-Uploader · GitHub ，感谢作者分享这个脚本。

可以到git下载dropbox_uploader.sh，地址为：https://github.com/andreafabrizi/Dropbox-Uploader
或者也可以直接拷贝代码，保存为dropbox_uploader.sh，注意拷贝的时候最好是复制到文本编辑器里面，如notepad++之类的

#!/usr/bin/env bash
#
# Dropbox Uploader
#
# Copyright (C) 2010-2014 Andrea Fabrizi <andrea.fabrizi@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

#Default configuration file
CONFIG_FILE=~/.dropbox_uploader

#Default chunk size in Mb for the upload process
#It is recommended to increase this value only if you have enough free space on your /tmp partition
#Lower values may increase the number of http requests
CHUNK_SIZE=4

#Curl location
#If not set, curl will be searched into the $PATH
#CURL_BIN="/usr/bin/curl"

#Default values
TMP_DIR="/tmp"
DEBUG=0
QUIET=0
SHOW_PROGRESSBAR=0
SKIP_EXISTING_FILES=0
ERROR_STATUS=0

#Don't edit these...
API_REQUEST_TOKEN_URL="https://api.dropbox.com/1/oauth/request_token"
API_USER_AUTH_URL="https://www2.dropbox.com/1/oauth/authorize"
API_ACCESS_TOKEN_URL="https://api.dropbox.com/1/oauth/access_token"
API_CHUNKED_UPLOAD_URL="https://api-content.dropbox.com/1/chunked_upload"
API_CHUNKED_UPLOAD_COMMIT_URL="https://api-content.dropbox.com/1/commit_chunked_upload"
API_UPLOAD_URL="https://api-content.dropbox.com/1/files_put"
API_DOWNLOAD_URL="https://api-content.dropbox.com/1/files"
API_DELETE_URL="https://api.dropbox.com/1/fileops/delete"
API_MOVE_URL="https://api.dropbox.com/1/fileops/move"
API_COPY_URL="https://api.dropbox.com/1/fileops/copy"
API_METADATA_URL="https://api.dropbox.com/1/metadata"
API_INFO_URL="https://api.dropbox.com/1/account/info"
API_MKDIR_URL="https://api.dropbox.com/1/fileops/create_folder"
API_SHARES_URL="https://api.dropbox.com/1/shares"
APP_CREATE_URL="https://www2.dropbox.com/developers/apps"
RESPONSE_FILE="$TMP_DIR/du_resp_$RANDOM"
CHUNK_FILE="$TMP_DIR/du_chunk_$RANDOM"
TEMP_FILE="$TMP_DIR/du_tmp_$RANDOM"
BIN_DEPS="sed basename date grep stat dd mkdir"
VERSION="0.14"

umask 077

#Check the shell
if [ -z "$BASH_VERSION" ]; then
  echo -e "Error: this script requires the BASH shell!"
  exit 1
fi

shopt -s nullglob #Bash allows filename patterns which match no files to expand to a null string, rather than themselves
shopt -s dotglob #Bash includes filenames beginning with a "." in the results of filename expansion

#Look for optional config file parameter
while getopts ":qpskdf:" opt; do
  case $opt in

  f)
   CONFIG_FILE=$OPTARG
  ;;

  d)
   DEBUG=1
  ;;

  q)
   QUIET=1
  ;;

  p)
   SHOW_PROGRESSBAR=1
  ;;

  k)
   CURL_ACCEPT_CERTIFICATES="-k"
  ;;

  s)
   SKIP_EXISTING_FILES=1
  ;;

  \?)
   echo "Invalid option: -$OPTARG" >&2
   exit 1
  ;;

  :)
   echo "Option -$OPTARG requires an argument." >&2
   exit 1
  ;;

 esac
done

if [[ $DEBUG != 0 ]]; then
  echo $VERSION
  set -x
  RESPONSE_FILE="$TMP_DIR/du_resp_debug"
fi

if [[ $CURL_BIN == "" ]]; then
  BIN_DEPS="$BIN_DEPS curl"
  CURL_BIN="curl"
fi

#Dependencies check
which $BIN_DEPS > /dev/null
if [[ $? != 0 ]]; then
  for i in $BIN_DEPS; do
    which $i > /dev/null ||
      NOT_FOUND="$i $NOT_FOUND"
  done
  echo -e "Error: Required program could not be found: $NOT_FOUND"
  exit 1
fi

#Check if readlink is installed and supports the -m option
#It's not necessary, so no problem if it's not installed
which readlink > /dev/null
if [[ $? == 0 && $(readlink -m "//test" 2> /dev/null) == "/test" ]]; then
  HAVE_READLINK=1
else
  HAVE_READLINK=0
fi

#Forcing to use the builtin printf, if it's present, because it's better
#otherwise the external printf program will be used
#Note that the external printf command can cause character encoding issues!
builtin printf "" 2> /dev/null
if [[ $? == 0 ]]; then
  PRINTF="builtin printf"
  PRINTF_OPT="-v o"
else
  PRINTF=$(which printf)
  if [[ $? != 0 ]]; then
    echo -e "Error: Required program could not be found: printf"
  fi
  PRINTF_OPT=""
fi

#Print the message based on $QUIET variable
function print
{
  if [[ $QUIET == 0 ]]; then
	  echo -ne "$1";
  fi
}

#Returns unix timestamp
function utime
{
  echo $(date +%s)
}

#Remove temporary files
function remove_temp_files
{
  if [[ $DEBUG == 0 ]]; then
    rm -fr "$RESPONSE_FILE"
    rm -fr "$CHUNK_FILE"
    rm -fr "$TEMP_FILE"
  fi
}

#Returns the file size in bytes
# generic GNU Linux: linux-gnu
# windows cygwin:  cygwin
# raspberry pi:   linux-gnueabihf
# macosx:      darwin10.0
# freebsd:      FreeBSD
# qnap:       linux-gnueabi
# iOS:        darwin9
function file_size
{
  #Some embedded linux devices
  if [[ $OSTYPE == "linux-gnueabi" || $OSTYPE == "linux-gnu" ]]; then
    stat -c "%s" "$1"
    return

  #Generic Unix
  elif [[ ${OSTYPE:0:5} == "linux" || $OSTYPE == "cygwin" || ${OSTYPE:0:7} == "solaris" ]]; then
    stat --format="%s" "$1"
    return

  #BSD, OSX and other OSs
  else
    stat -f "%z" "$1"
    return
  fi
}

#Usage
function usage
{
  echo -e "Dropbox Uploader v$VERSION"
  echo -e "Andrea Fabrizi - andrea.fabrizi@gmail.com\n"
  echo -e "Usage: $0 COMMAND [PARAMETERS]..."
  echo -e "\nCommands:"

  echo -e "\t upload  <LOCAL_FILE/DIR ...> <REMOTE_FILE/DIR>"
  echo -e "\t download <REMOTE_FILE/DIR> [LOCAL_FILE/DIR]"
  echo -e "\t delete  <REMOTE_FILE/DIR>"
  echo -e "\t move   <REMOTE_FILE/DIR> <REMOTE_FILE/DIR>"
  echo -e "\t copy   <REMOTE_FILE/DIR> <REMOTE_FILE/DIR>"
  echo -e "\t mkdir  <REMOTE_DIR>"
  echo -e "\t list   [REMOTE_DIR]"
  echo -e "\t share  <REMOTE_FILE>"
  echo -e "\t info"
  echo -e "\t unlink"

  echo -e "\nOptional parameters:"
  echo -e "\t-f <FILENAME> Load the configuration file from a specific file"
  echo -e "\t-s      Skip already existing files when download/upload. Default: Overwrite"
  echo -e "\t-d      Enable DEBUG mode"
  echo -e "\t-q      Quiet mode. Don't show messages"
  echo -e "\t-p      Show cURL progress meter"
  echo -e "\t-k      Doesn't check for SSL certificates (insecure)"

  echo -en "\nFor more info and examples, please see the README file.\n\n"
  remove_temp_files
  exit 1
}

#Check the curl exit code
function check_http_response
{
  CODE=$?

  #Checking curl exit code
  case $CODE in

    #OK
    0)

    ;;

    #Proxy error
    5)
      print "\nError: Couldn't resolve proxy. The given proxy host could not be resolved.\n"

      remove_temp_files
      exit 1
    ;;

    #Missing CA certificates
    60|58)
      print "\nError: cURL is not able to performs peer SSL certificate verification.\n"
      print "Please, install the default ca-certificates bundle.\n"
      print "To do this in a Debian/Ubuntu based system, try:\n"
      print " sudo apt-get install ca-certificates\n\n"
      print "If the problem persists,