内容如下：

#!/bin/bash

DATE=`date '+%Y%m%d'`

TIME=`date '+%H%M%S'`

BAK_CMD="/data/mysql3306/bin/mysqldump -uroot -proot -hlocalhost -P3306 --default-character-set=utf8 --master-data=2 --single-transaction "

DB_NAME="shop_zp"

DIR_NAME="/data/mysqlbak/db_bak/table_bak/"

#选择备份数据库名

printf "请输入备份数据库名，默认[${DB_NAME}],同时备份多个库格式[db_name1 db_name2]:\n"

while read BAK_DB_NAME

do

case ${BAK_DB_NAME} in

'Q'|'exit'|'q')

printf "退出备份程序，备份结束[`date '+%Y/%m/%d %H:%M:%S'`] ... \n"

exit

;;

*)

if [ "`echo ^${BAK_DB_NAME}`" = "^" ]; then

BAK_DB_NAME=${DB_NAME}

fi

break

;;

esac

done

printf "(#提示：你输入备份数据库名是[${BAK_DB_NAME}].)\n"

#输入备份的表名

printf "请输入备份的表名，单表即表名，多表格式[table1 table2 table3]，全库或多库备份请直接回车:\n"

while read BAK_TABLE_NAME

do

case ${BAK_TABLE_NAME} in

'Q'|'exit'|'q')

printf "退出备份程序，备份结束[`date '+%Y/%m/%d %H:%M:%S'`] ... \n"

exit

;;

*)

if [ "`echo ^${BAK_TABLE_NAME}`" = "^" ]; then

BAK_TABLE_NAME="ALL"

fi

break

;;

esac

done

printf "(#提示：你输入备份的表名是[${BAK_TABLE_NAME}].)\n"

#输入备份的目录

printf "输入备份的目录，默认[${DIR_NAME}]，注意路径以"/"结束:\n"

while read TMP

do

case ${TMP} in

'Q'|'exit'|'q')

printf "退出备份程序，备份结束[`date '+%Y/%m/%d %H:%M:%S'`] ... \n"

exit

;;

*)

if [ "`echo ^${TMP}`" = "^" ]; then

TMP=${DIR_NAME}

fi

if [ ! -d ${TMP} ]; then

printf "备份目录[${TMP}]不存在... \n"

printf "请输入备份目录，默认[${DIR_NAME}]:\n"

else

BAK_DIR_NAME=${TMP}

break

fi

;;

esac

done

unset TMP

printf "(#提示：你输入备份目录是[${BAK_DIR_NAME}].)\n"

#开始执行相应级别备份脚本

T_NAME=`echo "${DATE}_${BAK_DB_NAME}@${BAK_TABLE_NAME}_${TIME}.sql"|sed "s/ /@/g"`

if [ ${BAK_TABLE_NAME} == ALL ];then

printf "\n开始备份[${BAK_DB_NAME}]数据库[`date '+%Y/%m/%d %H:%M:%S'`] ... \n"

${BAK_CMD} --databases ${BAK_DB_NAME} > ${BAK_DIR_NAME}${T_NAME}

else

printf "\n开始备份[${BAK_DB_NAME}]数据库[${BAK_TABLE_NAME}]表[`date '+%Y/%m/%d %H:%M:%S'`] ... \n"

${BAK_CMD} --databases ${BAK_DB_NAME} --tables ${BAK_TABLE_NAME} > ${BAK_DIR_NAME}${T_NAME}

fi

printf "备份完成，备份文件[${BAK_DIR_NAME}${T_NAME}] ...大小为[`du -k ${BAK_DIR_NAME}${T_NAME} | awk '{printf $1}'` Kbytes]\n"