把mysql查询结果保存到文件的shell脚本

#!/bin/bash
if [ -f "/var/lib/mysql/hell.txt" ]; then
rm -f /var/lib/mysql/hell.txt
echo "delete /var/lib/mysql/hell.txt" >> hell.txt
fi
mysql -uroot -plab EOF
use home;
select YongHuID,XueYuanID into outfile './hell.txt' fields terminated by '|' lines terminated by '\r\n' from sns_home_user where YongHuID 20;
EOF