C# 字串切割小訣竅

通常C#字串切割大家都知道使用Split函數。 例如cr

 
string[] tokens = stringVariable.Split('\r');

那如果，可以試試以下的方法

 
stringVariable.Split(new string[] { "\r\n" }, StringSplitOptions.None);

SyntaxHighlighter Blogger 程式碼顯示外掛

SyntaxHighlighter 是一個簡單好用的外掛，但是要套用在Blogger不能使用html縮寫。

<link href='http://alexgorbatchev.com/pub/sh/current/styles/shCore.css' rel='stylesheet' type='text/css'/>

<link href='http://alexgorbatchev.com/pub/sh/current/styles/shThemeDefault.css' rel='stylesheet' type='text/css'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shCore.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushAS3.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushBash.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushColdFusion.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushCSharp.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushCpp.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushCss.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushDelphi.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushDiff.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushErlang.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushGroovy.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushJScript.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushJava.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushJavaFX.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushPerl.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushPhp.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushPlain.js' type='text/javascript'/>

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<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushPython.js' type='text/javascript'/>

<script src='http://alexgorbatchev.com/pub/sh/current/scripts/shBrushRuby.js' type='text/javascript'/>

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Linux NIC Binding with Cable Modem Speedtest

最近因為專案的需求又需要研究Ookla的speedtest軟體，希望測速能夠達到840Mbps。 目前只有670Mbps左右，實在是有很大的差距。

當初想說一張NIC的GE Port不夠力所以binding兩張NIC並設定Mode為0，但是發現測試Cable modem的速度，downstream卻只有130Mbps左右，真是慘不忍睹。 但是測速同一個網段的Server且用不同的測速主機驗證又速度一致，因此目前還找不出原因。 目前只知道binding與Cable Modem測速有相當的關係。

Java SNMP Package API Used

Java SNMP Package API 是一個相當容易上手的API。 但作者開發到1.4.2就沒有再往下開發了，我發現了它的timeout機制似乎部會work 如果有興趣的人可以參考作者網站：http://jsevy.com/snmp/ 我所使用的API Sample

 
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.logging.Level;
import java.util.logging.Logger;
import snmp.SNMPBadValueException;
import snmp.SNMPGetException;
import snmp.SNMPObject;
import snmp.SNMPObjectIdentifier;
import snmp.SNMPOctetString;
import snmp.SNMPSequence;
import snmp.SNMPVarBindList;
import snmp.SNMPv1CommunicationInterface;

/**
 *
 * @author Derek.Li
 */
public class SnmpGet {

    public static void println(int level, String context) {
        if (level > 0) {
            return;
        }
        System.out.println(context);
    }
//    public final String itemID = "1.3.6.1.2.1.1.1.0";

    public String snmpGet(String IP, String community, String OID) {
        try {
            InetAddress hostAddress = InetAddress.getByName(IP);
            int version = 0; //設定0的時候為使用snmpv1
            SNMPv1CommunicationInterface comInterface = new SNMPv1CommunicationInterface(version, hostAddress, community);
            comInterface.setSocketTimeout(5000); //ms = 1/1000 s

            // the getMIBEntry method of the communications interface returns an SNMPVarBindList
            // object; this is essentially a Vector of SNMP (OID,value) pairs. In this case, the
            // returned Vector has just one pair inside it.
            SNMPVarBindList newVars = comInterface.getMIBEntry(OID);
            // extract the (OID,value) pair from the SNMPVarBindList; the pair is just a two-element
            // SNMPSequence
            SNMPSequence pair = (SNMPSequence) (newVars.getSNMPObjectAt(0));
            // extract the object identifier from the pair; it's the first element in the sequence
            SNMPObjectIdentifier snmpOID = (SNMPObjectIdentifier) pair.getSNMPObjectAt(0);
            // extract the corresponding value from the pair; it's the second element in the sequence
            SNMPObject snmpValue = pair.getSNMPObjectAt(1);

            // print out the String representation of the retrieved value
            String result = snmpValue.toString();
            if(OID.equals("1.3.6.1.2.1.2.2.1.6.2"))
                return ((SNMPOctetString)snmpValue).toHexString();
            return result;
        } catch (Exception e) {
            String result = null;
            return result;
        }
    }
}
   

Acronis 11 Backup 問題 使用類似Linux的顯示方式時無將資料備份至NTFS磁碟區

使用Acronis開機光碟進行有HDD壞軌進行備份，選擇NTFS外接式隨身碟，結果出現以下錯誤訊息： 使用類似Linux的顯示方式時無將資料備份至NTFS磁碟區.... 原來是一開始上方有個設定要開啟使用Windows的瀏覽模式才可以正常備份成功。 另外有壞軌的HDD在備份過程中會出現需要使用者互動的狀況，只要點選一率忽略即可，因為不忽略也不能往下運作了。

秒數轉換成天數公式作法 範例 php

首先因為要計算session的live time所以需要將以下類似這樣的結果進行轉換 Starttime Stoptime Sessiontime 2014-11-09 15:48:26 2014-11-14 14:24:00 426934 公式如下： function calcTime($diff){ $sec = $diff % 60; $sec2 = $diff/60; $min = $sec2 % 60; $min2 = $sec2 / 60; $hr = $min2 % 24; $hr2 = $min2 / 24; $day = $hr2 % 24; $result = $day ." 天 " . $hr . " 小時 " . $min . " 分鐘 " . $sec . " 秒"; return $result; } 換算出來的結果就是： 4 天 22 小時 35 分鐘 34 秒

C# Process Standard Output 隨手筆記

原本有些API在應用的時候，原本的想法就是透過Telnet的方式來呼叫進行互動式的操作。
但為了簡化環境的因子，想說如果可以利用C#呼叫外部程式的方式，進行溝通鳩可以了。
雖然事與願違，但還是將測試的過程進行了以下的紀錄。

Process process = new Process();
process.StartInfo.FileName = "cliprogram.exe";
process.StartInfo.UseShellExecute = false; //如果輸出導向的話此處要設定
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardInput = true;
process.Start();
while (!process.StandardOutput.EndOfStream)
{
string line = process.StandardOutput.ReadLine();
//line += process.StandardError.ReadLine();
// do something with line
Console.WriteLine(line);
}

但我發現有些程式如果還在運行中，Standardoutput不認為輸出完成所以不會回傳值。
但如果用ReadLine();則僅能讀取第一行。

後續還有突破再補上。