using ntop

First, using the For loop structureTarget:This case requires writing a shell script chkhosts.sh that uses a for loop to detect the surviving status of multiple hosts, with the following requirements and instructions:1> Ping Detection of 192.168.4.0/24 network segments2> Ping Detection can refer to the pinghost.sh script of the preceding dayThe 3> script can traverse the ping hosts and feed back the surviving statusAfter the test script is executed, th

What statements can use the using management?Analysis: scarce resources require using management. is the using release a managed or unmanaged resource?So what are managed and unmanaged resources?managed resources are resources that are allocated and freed by the CLR, typically managed memory, while unmanaged resources are resources that are allocated and freed by

In this case, a simple chat room is written using the encapsulated network service class, and TCP and asynchronous socket technologies are used: App. config file: DemonstrationCode XML version = "1.0" encoding = "UTF-8" ?> Configuration > Appsettings > Add Key ="Servername" Value = "127.0.0.1" /> Add Key = "SERVERPORT" Value = "6001" /> Add Key ="Remoteserv

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Using system; Using system. Collections. Generic; Using system. componentmodel; Using system. Data; Using system. drawing; Using s

MySQL Using temporary; Using filesort inner join optimization, filesortinnerProblem Using the show full processlist statement, you can easily find the problematic SQL statement, as shown below: SELECT post.*FROM postINNER JOIN post_tag ON post.id = post_tag.post_idWHERE post.status = 1 AND post_tag.tag_id = 123ORDER BY post.created DESCLIMIT 100 Note: Because pos

I. Using RSA certificates to encrypt and decrypt sensitive dataThe certificate standard supports three kinds of asymmetric encryption algorithms: RSA, DSA, Diffie-hellman algorithms. The most common is the RSA algorithm. So this article is encrypted and decrypted using the generated Mytestcert certificate generated by the MakeCert tool in the previous section, which has a 1024-bit key pair for the RSA algor

= Nbasic; Margin-left. var nheightbasic = 0; Margin-top. {{change map margin above.} var npicwidth = 45; Picture width is nbasic. var npicheight = 45; Picturn the height is nheightbasic. {{Change icon size above.} var nsub; var nrow; var Ncol; var v = shurdle.split (';'); var vrec = []; for (nsub = 0; nsub var Vcrid = V[nsub].split (', '); Vrec[vrec.length] = Vcrid; } for (nrow = 0; nrow var vcol = Vrec[nrow]; for (ncol = 0; Ncol var cType = Vcol[ncol]; var mmargin

In php programming, the difference between using commas for echo and using dots is that using commas for echo. In php programming, the difference between using a comma for echo connection and using a dot number is that using an ec

Write a small monitor using Python and write a monitor using Python 1. Getting Started First of all, you have to use a C/C ++, java, Javascript, and so on. Programming is difficult, and python with some programming experience is relatively simple. 1.1 Hello World! Python installation is relatively simple. You can download the installation package from the official website and proceed to the next step. Becau

elements, static text, and sub-forms. The child form is also a CForm object, except that it exists in the cform::elements of another form. A child form can have its own data model, Cform::buttons, and cform::elements collections. When a user submits a form, the data that is filled in the entire form structure is submitted, including the data that is filled in the subform. CForm provides a convenient way to automatically assign input data to the corresponding data attributes and perform data val

232. Implement Queue using StacksImplement the following operations of a queue using stacks. Push (x)--push element x to the back of the queue. Pop ()--Removes the element from in front of the queue. Peek ()--Get the front element. Empty ()--Return whether the queue is empty. Notes: You must use only standard operations of a stack--which means only push to top , peek/pop

I haven't found any big difference after half a day, maybe because I haven't found a scenario that shows the advantages of using the call_user_func_array () function. Who knows. Link to an introduction Article ~ {Code ...} for details, refer to the big one on the first floor. It's really good: {code ...} I haven't found any big difference after half a day, maybe because I haven't found a scenario that shows the advantages of

Tags: des style blog HTTP color Io OS ar Using git in xcode Keeping in sync with remote Repositories As you make changes in your local working copy you will want to keep them in sync with the remote repository. xcode offers support for pulling from and pushing to a remote repository, and for tracking remote branches. There are two ways to pull from a remote repository. the first is from the project window. select File | source control | pull from the

LeetCode 232 Implement Queue using Stacks (Queue using Stack )(*)Translation Stack is used to perform the following operations on the queue. Push (x) -- write element x to the end of the queue pop () -- remove the element peek () from the queue header -- return the queue Header element empty () -- whether the returned queue is empty. Note: you must use a stack with only standard operations. That is to say,

Document directory Understanding callback Mode Understanding event transmitter Mode Understanding event types Use the event transmitter API Create an event Transmitter For the list of articles in this series and the translation progress, see Node. js advanced programming: using Javascript to build scalable applications (〇) This article corresponds to the first part of the original article, Chapter 5: Node Core API Basics:

ArticleDirectory 4.7.1 Standard Functions 4.7.2 database functions 4.7 use functions You can use a function to extend the query by using LINQ to entities. There are four types of functions that can be applied: Canonicalized functions-a set of predefined functions not provided by LINQ to entities themselves. Database functions-a set of predefined SQL server functions. Functions defined in the model-User-Defined Entity SQL

Element root = Document.getrootelement (); List recordenvlist = document.selectnodes ("//gml:envelope"); Code that will go wrong Element el= (Element) Root.selectsinglenode ("info[@id = '" +id+ "']");//or This code The error message is: Noclassdeffounderror:org/jaxen ... org.dom4j.DocumentFactory.createXPath reason: dom4j XPath API relies on Jaxen to complete Workaround: Add Jaxen.jar to the system. Jaxen.jar Download Path: http://jaxen.codehaus.org/releases.html -----------------------------

, I'm using an asynchronous client to emulate the synchronous client execution (call Future.get ()), which is implemented internally by the client, with only 4 or 8 worker threads Netty. When we just started TOMCA. T service, not warm-up, system performance is poor, at this time queued tasks, will allow the huge tomcat business threads (1024) occupy the CPU task queue, and Netty worker threads less, not CPU time execution, and finally caused the timeo

To submit a request using URLConnection:1. Create a URLConnection object by calling the URL object OpenConnection () method2. Set urlconnection parameters and normal request properties3. If you just send a Get method request, use the Connet method to establish the actual connection between the remote resources, and if you send a post-mode request, you need to get the output stream for the URLConnection instance to send the request parameters.4. The re

Original Link:http://blogs.msdn.com/b/cjacks/archive/2008/12/04/ How-to-set-directory-permissions-at-install-time-using-an-msi-created-using-windows-installer-xml-wix.aspxAuthor:chris Jacksonfollowing content is the directly reprinted from above link and the for knowledge sharing. Please go to above link for more detailed info. thanks~Here is a topic I has been saying "I ll get to it" for a while now ...We