SHELL脚本自动备份Linux系统

今天来写一个使用shell脚本增量备份系统文件，顺便复习一下shell脚本相关的命令，这个脚本可以根据自己的需求来备份不同的文件或者文件夹，进行完整备份和增量备份。直接上脚本如下：

#!/bin/sh 

#Automatic Backup Linux System Files 

#Author wugk 2013-11-22 

#Define Variable 

SOURCE_DIR=( 

    $* 

) 

TARGET_DIR=/data/backup/

YEAR=`date +%Y` 

MONTH=`date +%m` 

DAY=`date +%d` 

WEEK=`date +%u` 

FILES=system_backup.tgz 

CODE=$? 

if

    [ -z "$*" ];then

    echo -e "Please Enter Your Backup Files or Directories\n--------------------------------------------\nExample $0 /boot /etc ......"

    exit

fi

#Determine Whether the Target Directory Exists 

if

    [ ! -d $TARGET_DIR/$YEAR/$MONTH/$DAY ];then

    mkdir -p $TARGET_DIR/$YEAR/$MONTH/$DAY 

    echo "This $TARGET_DIR is Created Successfully !"

fi

#EXEC Full_Backup Function Command 

Full_Backup() 

{ 

if

    [ "$WEEK" -eq "7" ];then

    rm -rf $TARGET_DIR/snapshot

    cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;tar -g $TARGET_DIR/snapshot -czvf $FILES `echo ${SOURCE_DIR[@]}` 

    [ "$CODE" == "0" ]&&echo -e  "--------------------------------------------\nThese Full_Backup System Files Backup Successfully !"

fi

} 

#Perform incremental BACKUP Function Command 

Add_Backup() 

{ 

   cd $TARGET_DIR/$YEAR/$MONTH/$DAY ; 

if

    [ -f $TARGET_DIR/$YEAR/$MONTH/$DAY/$FILES ];then

    read -p "These $FILES Already Exists, overwrite confirmation yes or no ? : " SURE 

    if [ $SURE == "no" -o $SURE == "n" ];then

    sleep 1 ;exit 0 

    fi

#Add_Backup Files System 

    if

        [ $WEEK -ne "7" ];then

        cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;tar -g $TARGET_DIR/snapshot -czvf $$_$FILES `echo ${SOURCE_DIR[@]}` 

        [ "$CODE" == "0" ]&&echo -e  "-----------------------------------------\nThese Add_Backup System Files Backup Successfully !"

   fi

else

   if

      [ $WEEK -ne "7" ];then

      cd $TARGET_DIR/$YEAR/$MONTH/$DAY ;tar -g $TARGET_DIR/snapshot -czvf $FILES `echo ${SOURCE_DIR[@]}` 

      [ "$CODE" == "0" ]&&echo -e  "-------------------------------------------\nThese Add_Backup System Files Backup Successfully !"

   fi

fi

} 

Full_Backup;Add_Backup