Rehat一键安装mysql脚本和备份数据库脚本

#!/bin/bash  

#获取系统信息
sudo cat /etc/issue>myfile


aa=sudo grep ‘5.‘ myfile
bb=sudo grep ‘6.‘ myfile
cc=sudo grep ‘7.‘ myfile

echo $aa

echo "It is a test" > myfile

#获取系统信息
sudo cat /etc/issue>myfile


aa=sudo grep ‘5.‘ myfile
bb=sudo grep ‘6.‘ myfile
cc=sudo grep ‘7.‘ myfile

echo $aa
echo $cc
echo $bb

#配置yum源
if [ "$aa"x != "‘‘"x ]
then

  echo "您的系统是rehat5的版本，即将为您安装mysql"

  wget https://repo.mysql.com//mysql57-community-release-el5-8.noarch.rpm --no-check-certificate

  rpm -Uvh mysql57-community-release-el5-8.noarch.rpm

elif [ "$bb"x != "‘‘"x ]
then

  echo "您的系统是rehat6的版本，即将为您安装mysql"

  wget https://repo.mysql.com//mysql57-community-release-el6-10.noarch.rpm --no-check-certificate

  rpm -Uvh mysql57-community-release-el6-10.noarch.rpm


elif [ "$cc"x != "‘‘"x ]
then

  echo "您的系统是rehat7的版本，即将为您安装mysql"

  wget https://repo.mysql.com//mysql57-community-release-el7-10.noarch.rpm --no-check-certificate

  rpm -Uvh mysql57-community-release-el7-10.noarch.rpm

fi

#安装系统
yum install mysql-community-server

#启动服务
service mysqld start

#查看临时密码文件
grep ‘temporary password‘ /var/log/mysqld.log

#!/bin/bash  
  
#保存备份个数  
number=3  
#备份保存路径  
backup_dir=/root/mysqlbackup  
#日期  
dd=`date +%Y%m%d`  
#备份工具  
tool=mysqldump  
#用户名  
username=root  
#密码  
password=******  
#将要备份的数据库  
database_name=users  
  
#简单写法  mysqldump -u root -p123456 users > /root/mysqlbackup/users-$filename.dump  
$tool -u $username -p$password $database_name > $backup_dir/$database_name-$dd.dump  
  
#写创建备份日志  
echo "create $backup_dir/$database_name-$dd.dupm" >> $backup_dir/log.txt  
  
#找出需要删除的备份  
delfile=`ls -l -crt  $backup_dir/*.dump | awk ‘{print $9 }‘ | head -1`  
  
#判断现在的备份数量是否大于$number  
count=`ls -l -crt  $backup_dir/*.dupm | awk ‘{print $9 }‘ | wc -l`  
  
if [ $count -gt $number ]  
then  
  rm $delfile  #删除最早生成的备份，只保留number数量的备份  
  #写删除文件日志  
  echo "delete $delfile" >> $backup_dir/log.txt  
fi