如何备份应用程序的数据库

Question

我正在尝试编写一个脚本来备份由应用程序管理的数据库，并且想知道是否有一种更简单的方法来实现它。我想我把事情弄复杂了。

基本上，我将停止应用程序服务(除了数据库之外)，并将其保存到文本文件中，文本文件被读取，直到它给出适当的输出。然后，我运行一个脚本，将数据库导出到两个文件，并将输出写入另一个文本文件，该文本文件被读取，直到成功。然后，我再次启动服务。

以下是代码：

#!/bin/bash

#Make sure to run in the right folder!

echo "Here it will stop the manager services"

/etc/init.d/arcsight_services stop manager > /tmp/tmp/mangerstatusdown.txt

while [["./rr.sh /tmp/tmp/managerstatusdown.txt" != "[manager status down]"]]

do 

    echo "Not Ready Yet"
    read -p "Do you think it's ready to move on?"

done 

echo "Now it will export the database"

/opt/arcsight/manager/bin/arcsight export_system_tables > /tmp/tmp/systemtables.txt

while [["./rr.sh /tmp/tmp/systemtables.txt" != "[system tables export successful]" ]]
do 

    echo "Not Ready Yet"
    read -p "Do you think it's ready to move on?"

done

echo "Here it will start the manager again"

/etc/init.d/arcsight_services start manager

这是引用的rr.sh脚本：

while IFS=' ' read -r line || [[ -n "$line"]]; do
    echo "Text read from file:  $line"
done < "$1"


#run as follows:
#chmod +x rr.sh
#./rr.sh filename.txt

这实际上是我的第一个剧本，所以当你解释的时候请记住这一点！

Answer 1

bash不直接进行字符串比较；您需要使用特定的命令。

while [[ "$(./rr.sh /tmp/tmp/systemtables.txt)" != "[system tables export successful]" ]]
do