cfdisk
按上下键选中要扩容的分区
扩容后

![image.png](https://wiki.momen.world/static/img/2502161403ea76ce6fcb0ece08a42a5d.image.png)
需要让文件系统知道分区已被扩容


![image.png](https://wiki.momen.world/static/img/7f284019e587af6551c9bd437f6f0541.image.png)

ubuntu扩容

./share/hadoop/kms/tomcat/webapps/kms/WEB-INF/lib/hadoop-kms-2.7.3.jar
./share/hadoop/common/hadoop-common-2.7.3.jar
./share/hadoop/common/hadoop-common-2.7.3-tests.jar
./share/hadoop/common/hadoop-nfs-2.7.3.jar
./share/hadoop/common/lib/*.jar


hadoop运行jar

```
void MainWindow::on_passbookButton_clicked(){
    passbookPassword *pbp=new passbookPassword;
    QString password=pbp->getPassword();
    qDebug()<<"main"<<password;
//    PassBook *passBook=new PassBook(password);
//    passBook->show();
}
```
passbookPassword原来的构造函数中用的是QWidget，导致`QString password=pbp->getPassword();`先输出。
现在使用QDialog成功解决该问题


QDialog+exec模态对话框解决QWidget不能阻塞

```c++
#include <iostream>
using namespace std;
class B{
public:
	int b=10;
	B();
};
B::B(){
	cout<<"输入b";
	cin>>b;
}
class A{
public:
	int a;
	A(B b_obj); // 添加B类型的参数
};
A::A(B b_obj){
	a = b_obj.b; // 访问B对象的数据成员b
	cout<<"构造"<<a;
}
int main(){
	B BB;
	A AA(BB); // 创建A对象时将B对象传递进去
}
```
```
--------
|输入b20
|构造20
--------
```

classB构造函数中得到的值给构造时的classA


![image.png](https://wiki.momen.world/static/img/f9e17da193d4ddb56001942fc64a889f.image.png)
`allCredentialsLayout->insertWidget(allCredentialsLayout->count() - 1, credentialWidget);`