Visual Studio

熱鍵:
下一個游標點:ctrl + -
上一個游標點:ctrl + shift + -



C++ - Window Form:
Message Alert:
   MessageBox::Show("USA army","My policy", MessageBoxButtons::OKCancel,

         MessageBoxIcon::Asterisk);

Linux 基本知識

1.tarball 即是 tar.gz壓縮的意思 , carrier 溢位
  Alias-別名 : 可使用於將 A.長指令CMD轉成短代號 或 B.將網頁的子目錄對應到 網址的別名上

2.RPM安裝平台-
所有Intel x86指令集的處理器,Pentium 3 ,Pentium 4,AMD的K7 : i386平台
   Intel的Pentium 3 ,Pentium 4,pentium M, 與 AMD的Athlon,Duron,Thunderbird 以上等級:i686平 台
 Intel x86 處理器平台的Pentium MMX, AMD的K5, K6: i586平台
Intel 64位元 Xeon, AMD K8, Athlon64 等 64位元等級的處理器:x86_64平台
  不限定任何平台,通用各類平台的RPM套件軟體: noarch

3.RPM- Redhat Package Manager :套件軟體標準
   YUM:套件檔案的版本與相依性資料庫,相依的附加套件一併打包下載回來,且自動安裝完成

4.loopback interface(簡稱lo):回路介面

5.私人IP位址:
   class A: 10.0.0.0 ~ 10.255.255.255
   class B: 172.16.0.0 ~ 172.31.255.255
   class C: 192.168.0.0 ~ 192.168.255.255

6.class A~ class E的遮罩:0XXXXXXX,10XXXXXX,110XXXXX,1110XXXX,11110XXX

7.Linux的服務即稱為Daemon ,所以網頁服務稱為httpd ,telnetd(以d為結尾)


8.服務執行檔目錄:/etc/init.d/
 其他/etc/rcX.d/   ; 開機自動執行的shell script:/etc/rc.d/rc.local

9.啟動層級服務腳本目錄:ls -dl /etc/rc*

10.開機自動執行的腳本檔(可於最後列編輯):/etc/rc.local

11.Standalone 獨立型服務-開機後會不停止服務
     xinetd 總管服務-有需要才會進行服務

12.系統排程: cat /etc/crontab
     排程運作紀錄:/var/log/cron

13. Linux安全防護機制:
        iptables - 防火牆:對於進來的連線服務要穿透linux的外層時,所要過濾port號 與 封包
        Security Enhanced Linux-SELinux - 增強安全機制

14.vsftpd 安全性ftp-
   匿名登入-/var/ftp/
   使用者帳號登入- /帳號家目錄

15.DNS設定檔- /etc/resolv.conf

16.DNS伺服器架設軟體-BIND(Berkeley Internet Name Domain)

   Port-53, use TCP/UDP,need Firewall opened

17.FQDN(Fully Qualified Domain Name)-網域名稱

 

Linux basic command

搜尋文件裡面的關鍵字:
grep -rnw '/home/xx/xx/software/curl-7.56.1' -e 'curl_easy_perform'

unzip file to another folder:
 tar xzf archive.tar.gz -C /destination

change User: 
  su - knight

check self:
   whoami
   
show command content by page:
 ls -al | more 


show command content by page in second way:

 ll | more 


find executable file or command :
    which ifconfig

system info:

   dmesg | more

find specified file:
   find /home -name(-size,-perm,-newer,-ctime) 

search some word in file:
   grep go install.log

search some word in command: 
   ls -al |  grep word1

find path word:
  echo $PATH

append word in exist file:
  ls /bin >> file

modified or create file:
  touch file1

remove directory forcely:
 rm -rf folder1


add write permission for user:
 chmod u+w john 

Check disk space:
 df

check folder space:
  du -h
  du -sh(total) 

process check :
  ps aux | more

process tree:
  pstree 

stop process:
 ctrl + z 

put process into background 1:
 sleep 40 & 

put process into background 2:
 sleep 50   (ctrl + z)
 bg
 ps -f

put background/foreground for  process:
  bg/fg [number] 

check bg jobs:
  jobs 

terminated process:
  ps
  kill [pid] 

kill process :
  ps 
  kill -9 [pid]

kill all process:
  killall httpd
  ps aux | grep httpd 

process priority value:
  nice  -n -15 sleep 200 &
  ps -l

use tree check folder:
 tree /proc | more 

write info to file directly:
 echo "newmsg" > /home/file1

watch process dynamically:
 top

tar file in normally:

  tar -czvf file1.tar.gz file1


un-tar file in normally:

  tar -xzvf file1.tar.gz 

tar file with date value:

tar -czvf back-`date +%Y%m%d`.tar.gz file1

fix time to os with network world rule:
 ntpdate watch.stdtime.gov.tw

fix time to bios hardware with network world rule:
 hwclock -w(hwclock -r)

show rpm installed-softwares:
   rpm -qa

 install gcc(conveniently way):
   yum install gcc
 install gcc(conveniently way with direct):
   yum -y install ncurses-devel

 make specified-size file  for testing:
   dd if=/dev/zero of=file1 bs=1M count=3
   if:use /dev/zero's output zero string 
   of:file name
   bs:every block's size 
   count:how many block
   
 count file's info:
   wc  file1.log
   11 22 33 file1.log
   11 is row count
   22 is character count
   33 is byte count

 ssh connect another linux pc:
    ssh root@10.1.1.1

 cross another linux to copy(local to remote):
    scp file1 root@10.1.1.1:/home/john
 cross another linux to copy(remote to local):

    scp root@10.1.1.1:/home/john/file1 .(. is now folder)


 serial number generator (use in shell script's loop tasks) :

   seq 2 17 ,seq (-w) 1 2 13 

 sort file context by line  :
  sort file1(english file) , sort -g file2(number file)
    
  remove repeat-line file by line:
      uniq doc1
    
  sort & uniq file:
      sort f1 | uniq
  get column value in records:
    raw file-
       rex,14,333
       gary,53,999
       yard,64,022
    
    cut -d',' -f 2 file1
       
      
  split file:    
    dd if=/dev/zero of=file1 bs=2M count=3
      split -b 1m file1
   
   join file:
     cat xaa xab xac > file1

  check 2 files are different or not:
      diff file1 file2
    network basic command:
       ping -c 3 tw.yahoo.com
       traceroute tw.yahoo.com
       hostname
       netstat –tnl (-n:port ,-t:tcp ,-u:udp, -l:info ,-p:pid and name)
  use simple word cmd to replace long word cmd(alias):
       alias dv='du -sh /var'
  
   remove alias:
      unalias dv
    add alias to fixed setting file for exist alias in reboot:
     cat ~/.bashrc
    echo variable to show:
      echo "$PATH"
       
    echo three line word:
       echo -e "line1\nline2\nline3"

    
set variable and get variable:
       set: what=”now”
       get: echo $ what

detect previous command success or not:
     ls
     echo $?
     Result: if success ,it is 0; if fail ,it is over 0.  
File test(1 is false,0 is true):
       -d(folder) ,-e(exist?),-s(size is 0?),-r(read?),-w(write?)
       -x(execute?),-L(link?),-n(length over 0?),-z(string is empty?)    
  A.test –d file1
    echo $?
  B.w1=”123” 
    w2=”ggh”
   test $w1 == $w2
   echo $?

 Two value comparison(1 is false,0 is true):
  v1=13
  v2=16

test $v1 –eq(equal) $v2
-ne(different)
-ge(great or euqlal)
-gt(great)  
-le(least or equal)
-lt(least)
echo $?


 Check .bashrc content:
     cd /root
     ls –a .bas*
  
  make a shell script and running it:
    vi file1  
      n1=$1
n2=$2
test $n1 -gt $n2
   chmod u+x file1
./file1 11 15
echo $?

If judgement:
  if test $v1 –gt $v2
    then
      echo “bigger”
    else 
      echo “smaller”
    fi


For judgement:
  for n in ‘seq 1 10’
   do
     echo $n
   done
   


check Loopback network equipment :
   ifconfig eth0

start/stop network card:
   ifconfig eth0 up/down

configure network’s ip and netmask:
   ifconfig eth0 192.168.1.2 netmask 255.255.255.0

show equipment info:
  ip address show , ip link show

equipment Statistics info:
  ip –s link show eth0

assign ip to specific equipment:
  ip address add 10.2.3.1/24 brd + dev eth0

check assign ip to specific equipment:
  ip address show dev eth0

delete ip to specific equipment:
 ip address del 10.2.3.1/24 dev eth0

change equipment attribute:
  ip link set eth0 up/down
find a specific ps:
  ps aux | grep httpd
check system service start or not:
    apt-get install chkconfig
    chkconfig –list apache2 (--list:boot runlevel show)

system service start or stop:
chkconfig –level 35 httpd on/off

start/stop standalone service:
  a.service [httpd/apache2] start
  b./etc/init.d/[httpd/apache2] start

add new crontab task:
   vi /etc/crontab (add in last line)
   0 23 * * 4 root /usr/sbin/backup.sh
   service crond restart
add alias to web url path:
   echo “Alias /data /opt/docs” >> /etc/httpd/conf/httpd.conf
   
   service httpd restart

限制無法存取其他目錄:
    vi /etc/vsftpd/vsftpd.conf
   最後加入tcp_wrappers=YES
加入禁錮名單:
   echo "edw" >> /etc/vsftpd/user_list

look ip for dns: 
   dig [@143.25.53.12] www.kimo.com.tw
   (@ip is DNS Server)

Look ip for server name:
  host www.kimo.om
  host www.kimo.com 41.12.124.6
  host –t ns you.tube

start DNS server(after installing bind software):
   service named start 
(or /etc/init.d/named start)

start DNS server(after booting),better to close firewall and SELinux:
   chkconfig –level 35 named on

DNS內部查詢:
  dig @127.0.0.1 www.websome.com

DNS 外部查詢:
  dig @192.168.1.13 www.websome.com

正常DNS 外部查詢:
  dig www.websome.com

Visual Studio 2013 Express C++ 繪圖

A.清除已繪圖的Chart之Series:
        if (this->chart2->Series["Series1"]->Points->Count >= 0){
Console::WriteLine("Clear Series!");
this->chart2->Series["Series1"]->Points->Clear();
}








B.讓Chart能夠加入Scrollbar

  B-1:選擇ChartAreas進入設定.

   B-2:選擇CursorX -> IsUserSelectionEnabled (true) 使其Chart能夠選取縮放範圍

B-3: 進入Axes橫軸

B-4:選定MinSize數量可以在畫面有ScrollBar的情況下,一個畫面有多少個橫軸數值

 B-5:程式碼參考

   B-5-1: 

http://social.msdn.microsoft.com/Forums/vstudio/en-US/f569382a-e05e-4295-b0f8-75cc4e504f79/add-scroll-bar-on-bar-chart-created-by-systemwindowsformsdatavisualizationchartingchart?forum=MSWinWebChart

   B-5-2: Visual C++ 

 this->chart2->ChartAreas["ChartArea1"]->AxisX->ScrollBar->Size = 20;

 this->chart2->ChartAreas["ChartArea1"]->AxisX->ScrollBar->ButtonStyle = ScrollBarButtonStyles-        >SmallScroll;

 this->chart2->ChartAreas["ChartArea1"]->AxisX->ScrollBar->IsPositionedInside = true;

 this->chart2->ChartAreas["ChartArea1"]->AxisX->ScrollBar->Enabled = true;

//get the current maximum of the axis

double ymax =chart2->ChartAreas["ChartArea1"]->AxisX->Maximum;

//Add the new data

 chart1.Series["Series1"].Points.AddXY();

//set the zoom size to the exisiting scale values other wise nothing happens

         chart2->ChartAreas["ChartArea1"]->AxisX->ScaleView->Zoom(-10, 10);

 chart2->ChartAreas["ChartArea1"]->AxisX->ScaleView->Zoomable;

HairDo

由上往下吹

一手抓髮3秒左右 用吹風機吹,過了3秒後可以只用手抓住 但不需要吹.

夏天不需要噴霧(髮蠟可)
,但是一定要用吹風機吹

Android 程式小技巧

A.訊息提示:
      Toast.makeText(contextAct, "readHRDatas",
              Toast.LENGTH_SHORT).show();

B.讓APP完整的退出for執行緒的處理:
   A. intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

   B.@Override
public void onDestroy()
{

stopDraw();
Log.d("test onDestroy", "destory");
setResult(0);
finish();
super.onDestroy();
}

@Override
public void onStop(){
super.onStop();
stopDraw();
 finish();
}



@Override
public void onPause() {
        super.onPause();
        stopDraw();
        finish();

    }

public void stopDraw(){
Log.d("stopDraw","stopDraw!!");
isRunGraph = false;

if(th1 != null ){
   th1.interrupt();
   th1 = null;
}

if(graphView != null){
//graphView.destroyDrawingCache();
graphView.removeAllViews();

graphView = null;
}


}

C.偵測dialog點擊視窗範圍內與否:
extends Dialog{
@Override
public boolean onTouchEvent(MotionEvent event) {

 if ( event.getAction () == MotionEvent.ACTION_UP ) {

   Rect r = new Rect ( 0, 0, 0, 0 );
   this.getWindow ().getDecorView ().getHitRect ( r );
   boolean intersects = r.contains ( (int) event.getX (), (int) event.getY () );
 
   if ( !intersects ) {
     this.dismiss();
     return true;
   }else{
    countClick++;
    if(countClick == 5){
    Intent ite = new Intent();
    ite.setClass(mContext, com.foxlink.wearable.engineering.EngineeringActivity.class);
    mContext.startActivity(ite);
    this.dismiss();
    countClick = 0;
    }
   }
 
 }
 return super.onTouchEvent ( event );
}

D.APP中呼叫藍芽設定:
 final Intent intent = new Intent(Intent.ACTION_MAIN, null);
         intent.addCategory(Intent.CATEGORY_LAUNCHER);
         ComponentName cn = new ComponentName("com.android.settings",
                 "com.android.settings.bluetooth.BluetoothSettings");
         intent.setComponent(cn);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         startActivity( intent);

E.執行續處理方式:
 http://stackoverflow.com/questions/10544515/how-to-stop-a-running-thread-when-activity-on-destroy-at-android

F.網站下載檔案並存檔
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
try {
File root = Environment.getExternalStorageDirectory();
BufferedOutputStream bout = new BufferedOutputStream(
new FileOutputStream(
root.getAbsolutePath() + "/version_an.txt"));


Log.d("root.getAbsolutePath()-", root.getAbsolutePath().toString());
request.setURI(new URI("http://1111111/img/version.cfg"));
HttpResponse response = client.execute(request);
StatusLine status = response.getStatusLine();
//textView1.append("status.getStatusCode(): " + status.getStatusCode() + "\n");
Log.d("Test", "Statusline: " + status);
Log.d("Test", "Statuscode: " + status.getStatusCode());

HttpEntity entity = response.getEntity();
//textView1.append("length: " + entity.getContentLength() + "\n");
//textView1.append("type: " + entity.getContentType() + "\n");
Log.d("Test", "Length: " + entity.getContentLength());
Log.d("Test", "type: " + entity.getContentType());

entity.writeTo(bout);

bout.flush();
bout.close();
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
//textView1.append("URISyntaxException");
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
//textView1.append("ClientProtocolException");
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
//textView1.append("IOException");
e.printStackTrace();
}

Android Tab分頁 手動更新其中一個畫面

http://developer.android.com/training/implementing-navigation/lateral.html


package com.foxlink.wearable.hrm;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.Display;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;

import com.foxlink.wearable.R;

public  class HistoryListSectionFragment extends Fragment {

private View rootView;
static int createCount2 = 0;
private static Context contextAct;
private TableLayout tl;
private LayoutInflater inf;
private ViewGroup con;
private Bundle bl;

public HistoryListSectionFragment(Context con , Display dis){
       HistoryListSectionFragment.contextAct = con;
}

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        this.inf = inflater;
        this.con = container;
        this.bl = savedInstanceState;
     
    readHRDatas();
    Toast.makeText(contextAct, "onCreateView",
        Toast.LENGTH_SHORT).show();
        return rootView;
    }
 
    public void callRefresh(){
//    onCreateView(inf, con, bl);
   getFragmentManager().beginTransaction().detach(this).attach(this).commit();
    }
 
 
    public void readHRDatas(){
    rootView = inf.inflate(R.layout.activity_historylist, con, false);

 
    tl = (TableLayout) rootView.findViewById(R.id.hrtable1);
   /* Create a new row to be added. */
 
   File[] files = contextAct.getFilesDir().listFiles();
 
   StringBuilder sb = new StringBuilder();
 
   for (int i = 0 ; i < files.length  ; i++ ){
            sb.append(files[i].getName()+",");
    String[] splitName;
   
    if((splitName = files[i].getName().split("\\s+")).length == 3  && splitName[0].contains("_")){
    insertHRRecord(i , splitName , files[i].getName() );
    }
   }
 
    Toast.makeText(contextAct, "all file:"+sb.toString(),
    Toast.LENGTH_SHORT).show();
    }
 
 
 
    /**
* add one record for even saved file
* @param count
* @param fileNames
* @param originalName
*/
public void insertHRRecord(int count , String[] fileNames ,final String originalName){
   TableRow tr = new TableRow(contextAct);
 
   tr.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT));
 
   if(count%2 == 0){
       tr.setBackgroundColor(Color.GRAY);
   }

   TextView t1 = new TextView(contextAct);
   t1.setHeight(150);
   String[] splitTime = fileNames[0].split("_");
   t1.setText("  "+splitTime[0] + "\n      " +splitTime[1]);
   t1.setGravity(Gravity.LEFT);
   t1.setTextSize(18);
   t1.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
   tr.addView(t1);
 
   TextView t2 = new TextView(contextAct);
   t2.setText(fileNames[1]);
   t2.setGravity(Gravity.LEFT);
   t2.setTextSize(18);
   t2.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
   tr.addView(t2);
 
   TextView t3 = new TextView(contextAct);
   t3.setText(fileNames[2]);
   t3.setGravity(Gravity.LEFT);
   t3.setTextSize(18);
   t3.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
   tr.addView(t3);
 
   tr.setOnClickListener(new OnClickListener() {
       @Override
        public void onClick(View v) {

              //Get the text file
              File readFile = new File(contextAct.getFilesDir(), originalName);

              //Read text from file
              List<Integer> intList = new ArrayList<Integer>();

              try {
                 BufferedReader br = new BufferedReader(new FileReader(readFile));
               
                 String line;

                 while ((line = br.readLine()) != null) {
                  intList.add(Integer.valueOf(line));
                 }
              }
              catch (IOException e) {
                 //You'll need to add proper error handling here
              }
             
              int[] ret = new int[intList.size()];
             
              for (int i=0; i < ret.length; i++)
                {
                    ret[i] = intList.get(i).intValue();
                }

             
              //send value to draw graph for this file
               Intent it = new Intent();
               it.setClass(HistoryListSectionFragment.contextAct, HistoryList_Graph.class);
               it.putExtra("hrvalues", ret);
               startActivity(it);

        }
});
 
   /* Add row to TableLayout. */
   tl.addView(tr, new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT));
}
}