#! /bin/bash
logintool=/home/yx/server/mysql/mysql/bin/mysql
dumptool=/home/yx/server/mysql/mysql/bin/mysqldump
username=root
passwd=`cat /home/yx/stt/shellmysql/dumpsql/.passwd`
socketfile=/var/run/mysqld/mysqld.sock
storepath=/home/yx/backup/hnf_file
now=`date +%Y%m%d%H%M%S`
password=${passwd}
stty erase ‘^H‘
read -p "请输入库名：" dbname
if [[ -z ${dbname} ]];then
echo -e "你输出的库名为空，请输入库名！\n"
exit 100
else
dbcheck=`${logintool} -u ${username} -p${password} -e "show databases;" 2>/dev/null | grep -w "${dbname}"`
if [[ -z ${dbcheck} ]];then
echo -e "你要导出的库不存在！请重新输入正确的dbname！\n"
exit 100
fi
fi
${dumptool} -u ${username} -p${password} -S ${socketfile} --set-gtid-purged=off ${dbname} > ${storepath}/${dbname}-${now}.sql
echo -e "${dbname}库 已经备份完毕!\n"
echo "保存路径为：${storepath}/${dbname}-${now}.sql"``
然后执行这个脚本，会提示你输入想要备份的数据库
这样就比用正常的命令备份方便了很多，也不用每次输入密码和端口号了
原文：https://blog.51cto.com/825536458/2413134