shell自动备份文件或目录到本地和远程主机

#!/bin/bash#Function:Automatically backup a given list of directories #or files, and can retain the N day backup files.#Can be back to the directory specified by the remote host,# but the need for free password login to the remote host#This script contains two files:Executable file "backup.sh" and# backup project file "bakfile.lst" ,two files must be in the same directory#Author:JianJie#Date:2016/8/26#Usage: sh backup.sh &#Version:v2###############################################################LOG_FILE=/backup/local/log/`date +"%Y-%m"`.log #Log fileLOG_DIR=/backup/local/logDATE_FORMAT=`date +"%Y-%m-%d"`                     BAK_FILE_LST=bakfile.lst       #Need to backup the file or directory to this fileBAK_DIR=/backup/local          #Backup directoryKEEP_DAYS=5                    #File retention daysREMOTE_HOST=""                #Split between multiple hosts with ':'REMOTE_DIR=/backup/$HOSTNAME  #Remote host backup directoryCURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"  #The directory where the current script is runningFORMAT="tar.gz"  #The compression format can be:tar.xz,tar.gz,tar.bz2###############################################################if [ "$REMOTE_HOST" != "" ];then  #Determine whether there is a backup directory on the remote host  ssh -t -q -n "$REMOTE_HOST" "[ ! -d "$REMOTE_DIR" ] && mkdir -p "$REMOTE_DIR""fi#Determine whether log directory and log file existsif [ ! -d $LOG_DIR ];then  mkdir -p $LOG_DIR  touch $LOG_FILEelse  if [ ! -e $LOG_FILE ];then  touch $LOG_FILE  fifi#LogStartecho "Backup start at $(date +"%Y-%m-%d %H:%M:%S")" >> $LOG_FILEecho "--------------------------------------------------------" >> $LOG_FILEecho " " >> $LOG_FILE#Determine whether the file list 'bakfile.lst' existsif [ ! -e $CURRENT_DIR/$BAK_FILE_LST ];then  echo "Error:Important file [$CURRENT_DIR/$BAK_FILE_LST] has been lost,now creating..." >> $LOG_FILE  touch $CURRENT_DIR/$BAK_FILE_LST  echo "The file [$CURRENT_DIR/$BAK_FILE_LST] has been created,but you still need to write data in it!" >> $LOG_FILE  echo " " >> $LOG_FILE  echo "--------------------------------------------------------" >> $LOG_FILE  echo "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $LOG_FILE  echo " " >> $LOG_FILE  exit 3fifor BACK_FILE in $(cat $CURRENT_DIR/$BAK_FILE_LST)  do      BASE_NAME=`echo "$BACK_FILE" | xargs basename`    OLD_FILE=$BAK_DIR/$BASE_NAME.$(date --date="$KEEP_DAYS days ago" +"%Y-%m-%d").$FORMAT    if [ -e "$BACK_FILE" ];then      cd $(dirname $BACK_FILE) #If a backup file already exists, it will no longer be backed up      if [ -f $BAK_DIR/$BASE_NAME.$DATE_FORMAT.$FORMAT ];then        echo "Backup file [$BAK_DIR/$BASE_NAME.$DATE_FORMAT.$FORMAT] already exists!" >> $LOG_FILE      else        cp -RHpf $BASE_NAME $BAK_DIR        cd  $BAK_DIR        case $FORMAT in        tar.xz)          tar -cpJf $BASE_NAME.$DATE_FORMAT.$FORMAT $BASE_NAME ;;        tar.gz)          tar -cpzf $BASE_NAME.$DATE_FORMAT.$FORMAT $BASE_NAME ;;        tar.bz2)          tar -cpjf $BASE_NAME.$DATE_FORMAT.$FORMAT $BASE_NAME ;;        *)          echo "Compress FORMAT error,default compression FORMAT:tar.gz" >> $LOG_FILE          tar -cpzf $BASE_NAME.$DATE_FORMAT.tar.gz $BASE_NAME ;;        esac      #Backup files back to the remote host via scp        if [ "$REMOTE_HOST" != "" ];then          for host in $(echo "$REMOTE_HOST" | sed 's/:/ /g')            do              scp -o ConnectTimeout=10 $BASE_NAME.$DATE_FORMAT.$FORMAT $host:$REMOTE_DIR >>$LOG_FILE 2>/dev/null && \              echo "Successful backup [$BACK_FILE] to the remote host:[$host:$REMOTE_DIR]" >>$LOG_FILE || \              echo "Backup [$BACK_FILE] to the remote host:[$host:$REMOTE_DIR] failed,please check it" >>$LOG_FILE            done        fi        #Backup complete, delete the copy of the source file        rm -rf $BASE_NAME        echo "Backup [$BACK_FILE] done into [$BAK_DIR] successfuly!" >> $LOG_FILE       #Existing N days old file, delete it        if [ -f $OLD_FILE ];then          rm -rf $OLD_FILE          echo "[$OLD_FILE],delete old file successfuly!" >> $LOG_FILE        fi      fi    else      echo "Wrong directory or file:[$BACK_FILE],please check it" >>$LOG_FILE    fi  doneecho " " >> $LOG_FILEecho "--------------------------------------------------------" >> $LOG_FILEecho "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $LOG_FILE#LogEndecho " " >> $LOG_FILEexit 0