1. check : iptables -L
2. check : iptables --line -vnL
3. add rule : iptables -I INPUT 5 -i eth0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT
4. check : iptables --line -vnL
ref : http://www.binarytides.com/open-http-port-iptables-centos/
2015年12月17日 星期四
2015年8月26日 星期三
[OS] Windows GPT to MBR
Windows GPT to MBR
1.使用Win7光碟或者USB引導，進入系統安裝界面。
2.按Shift + F10打開命令提示符。
3.輸入”Diskpart”(不用輸入引號，下同)，並ENTET，進入操作界面
4.輸入：”list disk”，查看硬碟信息。
5.輸入：”select disk 0”，選擇disk 0爲當前操作的硬碟。
6.輸入：”Clean”，清空當前硬碟分區。
7.輸入：”convert mbr”，轉換爲MBR分區。
8.操作完成，關閉此命令提示符窗口，繼續按照正常的方法安裝Win7系統即可。
Ref : https://zh-tw.facebook.com/notes/fb%E5%A4%A7%E6%84%9B%E5%9E%8B%E7%94%B7%E6%97%A5%E8%AA%8C-%E5%90%B3%E5%BF%A0%E8%AB%BA/%E5%A6%82%E4%BD%95%E5%9C%A8win8-%E8%BD%89win7-gpt%E6%A0%BC%E5%BC%8F-%E5%AE%89%E8%A3%9D%E6%A8%A1%E5%BC%8F%E4%B8%AD-%E8%A7%A3%E6%B1%BA%E4%B8%8D%E8%83%BD%E5%AE%89%E8%A3%9D%E7%9A%84%E6%A0%BC%E5%BC%8F%E8%99%95%E7%90%86/694713627247563
2015年2月23日 星期一
[android] Android Image Crop
Android Image Crop
Intent intent = new Intent("com.android.camera.action.CROP");
// this will open all images in the Galery
intent.setDataAndType(photoUri, "image/*");
intent.putExtra("crop", "true");
// this defines the aspect ration
intent.putExtra("aspectX", aspectY);
intent.putExtra("aspectY", aspectX);
// this defines the output bitmap size
intent.putExtra("outputX", sizeX);
intent.putExtra("outputY", xizeY);
// true to return a Bitmap, false to directly save the cropped iamge
intent.putExtra("return-data", false);
//save output image in uri
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
Ref :
01 . http://stackoverflow.com/questions/3846338/how-to-crop-an-image-in-android
02. example source :
http://linux.linuxidc.com/2012%E5%B9%B4%E8%B5%84%E6%96%99/11%E6%9C%88/11%E6%97%A5/%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8Android%20MediaStore%E8%A3%81%E5%89%AA%E5%A4%A7%E5%9B%BE%E7%89%87/
2015年2月9日 星期一
[Cross Compile] OpenSSL Cross Compile
UDP Socket Server & Client in C
source : ftp://ftp.openssl.org/source/
(1) cd into openssl-1.0.0d folder
(2) ./Configure linux-generic32 shared
(3) Edit Makefile Flag : CC, CFLAG, MAKEDEPPOG
(4) make clean
(5) make
2014年7月2日 星期三
[Qt4] How to change dynamically QWebFrame contents?
[Qt4] How to change dynamically QWebFrame contents?
Firstly, the setHtml will cause the loadFinished signal to be posted again, causing an infinite loop. I have attached working code of what you want to do.
#include "mainwindow.h"
Ref:
http://qt-project.org/forums/viewthread/6742/#39382
Firstly, the setHtml will cause the loadFinished signal to be posted again, causing an infinite loop. I have attached working code of what you want to do.
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtWebKit/QWebView>
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));
ui->webView->load(QUrl("http://www.google.com"));
}
MainWindow::~MainWindow()
{
disconnect(ui->webView, 0, this, 0);
delete ui;
}
void MainWindow::slotloadFinished(bool okay)
{
disconnect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));
ui->webView->setHtml("<html><body>test</body></html>");
connect(ui->webView, SIGNAL(loadFinished(bool)), this, SLOT(slotloadFinished(bool)));
}
Instead of the disconnect and connect, you could do this..
void MainWindow::slotloadFinished(bool okay)
{
ui->webView->blockSignals(true);
ui->webView->setHtml("<html><body>test</body></html>");
ui->webView->blockSignals(false);
}
Ref:
http://qt-project.org/forums/viewthread/6742/#39382
2014年7月1日 星期二
[Qt4] How I can get all “input” elements from webview ?
[Qt4] How I can get all “input” elements from webview ?
void Class::getElements()
https://qt-project.org/forums/viewthread/28920
http://qt-project.org/forums/viewthread/11604
http://stackoverflow.com/questions/2034981/how-to-manipulate-pages-content-inside-webkit-window-using-qt-and-qtwebkit
void Class::getElements()
{
QWebElementCollection collection = ui->cseriveOpenAPI_WebView->page()->mainFrame()->findAllElements("input");
foreach (QWebElement element, collection)
{
qDebug() << "title:" << element.attribute("title");
}
}
Ref : https://qt-project.org/forums/viewthread/28920
http://qt-project.org/forums/viewthread/11604
http://stackoverflow.com/questions/2034981/how-to-manipulate-pages-content-inside-webkit-window-using-qt-and-qtwebkit
2014年6月10日 星期二
[linux] bash return error : $? 2>&1
[linux] bash return error : $? 2>&1
bash 127 error return code
http://forum.linuxcareer.com/threads/1626-bash-127-error-return-code
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