bash 腳本編程十五 MySQL自動部署

現在來考慮MySQL在Ubuntu上的自動部署，有幾個問題需要解決：

第一，檢查是否安裝過了MySQL

第二，安裝過程中避免交互式輸入root密碼

在tool.sh中添加函數檢查dpkg包。

1. #$1 means the full name of dpkg
2. #return 1 if dpkg is installed (found 'ii dpkg-name' in the returned string)
3. #otherwise return 0
4. function hasDpkg {
5. r=`dpkg -l | grep "$1"`
6. if [ -n "$r" ]
7. then
8. h=`dpkg -l | grep "ii $1"`
9. if [ -n "$h" ]
10. then
11. return 1
12. else
13. return 0
14. fi
15. else
16. return 0
17. fi
18. }

1. #!/bin/bash
3. source ../common/tool.sh
5. mysql="mysql-server-5.5"
7. hasDpkg $mysql
8. r=$?
10. #!/bin/bash
12. if [ $r -eq 1 ]
13. then
14. echo "$mysql was installed"
15. else
16. echo "$mysql was not installed"
17. echo mysql-server mysql-server/root_password password 1234 | sudo debconf-set-selections
18. echo mysql-server mysql-server/root_password_again password 1234 | sudo debconf-set-selections
19. apt-get install $mysql
20. fi