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create table student
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 sname varchar(8) not null,
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 sage int ,
 sdept varchar(20));
 
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#!/bin/bash
current_date=`date +%Y-%m-%d:%H:%M:%S`
/usr/local/mysql/bin/mysqldump -prootpass  dbname1 > ./DB_DIR/dbname1_"$current_date"_dump_file.sql 
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