前段時間寫的使用python腳本自動備份系統文件，今天來寫一個使用shell腳本增量備份系統文件，順便復習一下shell腳本相關的命令，這個腳本可以根據自己的需求來備份不同的文件或者文件夾，進行完整備份和增量備份。
使用Python自動化備份系統及網站 http://www.linuxidc.com/Linux/2013-11/92457.htm
直接上腳本如下：
#!/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
以上腳本僅供參考，還有很多需要優化、完善和調整的地方，歡迎大家提出意見。
