mysql 单独备份一个数据库的所有表

单独备份某个库的所有表 ./script_name.sh dbname

employeestables.sh

#!/bin/bash
#backup employees of titles delete databasesbackup before 20

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:~/bin

#数据库用户名
user="root"
#数据库密码
passwd="aaa12345"
#备份文件存放目录
backupdir="/data/backup/"
#备份数据库名
dbname="employees"
#备份表名
#table="departments dept_emp dept_manager employees salaries titles"
table=$(mysql -u$user -p$passwd -ss -e "use $dbname;show tables;")
# table=$(mysql -uroot -paaa12345 -ss -e "select table_name from information_schema.tables where table_schema='employees';")

#当前时间
date=$(date +%Y%m%d%H%M%S)

#过期时间
outtime=20
#判断备份目录是否存在
if [ ! -d $backupdir ];then
mkdir -p $backupdir
fi
for tablename in $table

do
#备份出来的文件名
backfile=$tablename'_'$date.sql
#压缩后的文件名
tarfile=$backfile.tar.bz2

mysqldump -u$user -p$passwd $dbname $tablename > $backupdir$backfile
#tar
if [ $backfile ];then
tar -jcvf $tarfile $backupdir$backfile
rm -f $backfile
fi
done
#delete before 20
#find $backupdir -name *.tar.bz2 -mtime +$outtime |xargs rm -rf
find $backupdir -name *.tar.bz2 -mtime +$outtime -exec rm -f {} \;
###自动每天备份
[root@gyf backup]# crontab -e

01 12 * * * sh /data/backup/employeestables.sh

重启生效
[root@gyf backup]# /etc/init.d/crond restart