同一个实例下拷贝数据库到其他库下
要什么变量替换，直接复制粘贴，程序跑起来就走。
#!/bin/bash
# 将hellodb的数据拷贝到hellodb_bak库里面。
mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 2>/dev/null -e "flush tables with read lock;"
mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 2>/dev/null -e "create database hellodb_bak;"
tbname=$(mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 2>/dev/null -e "SELECT table_name from information_schema.tables where TABLE_SCHEMA='hellodb'")
for i in $tbname; do
mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 hellodb_bak 2>/dev/null -e "create table $i like hellodb.$i"
mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 hellodb_bak 2>/dev/null -e "insert into $i select * from hellodb.$i"
done
mysql -uroot -pAbcd@1234 -h 10.0.20.26 -P3306 2>/dev/null -e "unlock tables;"
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