electromagnetism questions and answers

'TOUCH-MT 201109151327/tmp/$baseNameDoneThird question: Write a script that shows the user names and ID numbers for the 3, 7, and 11 users in/etc/passwd.#!/bin/bashFor Lineno in 3 7 11;douserinfo= ' Head-n $lineNo/etc/passwd | Tail-1 | cut-d:-f1,3 'Echo-e "User: ' Echo $userInfo | cut-d:-f1 ' \nuid: ' echo $userInfo | cut-d:-f2 ' "DoneI wrote the following, made a little change, I feel fit my style, but the main frame unchanged.#!/bin/bashway=/etc/passwdFor Lineno in 3 7 11;doecho "User name: '

). In the process of populating the handler, depending on your configuration, Spring will do some extra work for you: Httpmessageconveter: Converts the request message (such as Json, XML, and so on) to an object, converting the object to the specified response information. Data Transformation: Data conversion for a request message. such as string conversion to Integer, double, and so on. Data is initialized: Data is formatted for the request message. such as converting a string into a formatt

Here are 5 interview questions to continue the previous questions and answers about Linux interviews. If you are a tecmint reader, I am very grateful for your support. 1. Write a shell script to get the current date, time, username and current working directory. Answer: The output username, current date and time, and the current working directory command are lo

itself.Prototype: The prototype range is the opposite of a singleton range, providing an instance for each bean request.Request: an instance of each network request from the client is created within the scope of the requesting bean, and after the request is completed, the bean is invalidated and reclaimed by the garbage collector.Session: Similar to the request scope, ensure that there is an instance of the bean in each session, and the bean will expire after the session expires.Global-session:

of the class, easy to handle exceptions;Development experience:The exception is the main processing of reading files, but also can be used with the method of reading files; can also be used for network connections where exceptions can include a large number of error messages for error handling.Code:Class Shortinputexception (Exception): def __init__ (self, length, atleast): exception.__init__ (self) self.length = length self.atleast = atleast while True: try:

article to learn more about the callable,future example.6. What is Futuretask?Futuretask is a fundamental implementation of the future, and we can use it with executors to handle asynchronous tasks. Usually we do not need to use the Futuretask class, it becomes very useful when we intend to rewrite some methods of the future interface and keep the original base implementation. We can just inherit from it and rewrite the methods we need. Read the Java futuretask example to learn how to use it.7.

Please give answers! Fc11 partition-general Linux technology-Linux technology and application information. For more information, see the following section. I want to know a few questions: 1. the/usr partition is used to install the software. Is it necessary to separate it into one partition? If I have installed the software after I reinstall the system, can I still use it? Is it necessary to keep this part

= "Video/ogg"> TrackKind= "Subtitles"label= "中文版"src= "T_EN.VTT"Srclang= "en"default> Track> TrackKind= "Subtitles"label= "Arabic"src= "T_AR.VTT"Srclang= "AR"> Track>Video>4. What media labels are available in addition to audio and VIDEO,HTML5?HTML5 provides strong support for multimedia, with the following tags supported in addition to audio and video tags:typesrc= "Test.mov">5. What is the use of HTML5 Canvas elements?The Canvas element is used to draw a graphic on a Web page, and th

); },10); The previous code allows the settimeout loop to trigger. However, the execution of this block of code suspends the time, so two execution times are greater than 10 milliseconds SetInterval (function () { /* code block */ },10); And the previous code, is automatically in 10 when the event hangs, so two times the interval of the event will be less than or equal to 10 milliseconds.When a thread is blocked at an event, either using SetInterval or settimeout waits f

business objects and control logic with control inversion. It also allows binding of request parameters and business objects in a declarative manner. DispatcherservletThe Spring MVC Framework is designed around Dispatcherservlet to handle all HTTP requests and responses. WebapplicationcontextWebapplicationcontext inherits ApplicationContext and adds some unique features to the Web application that are different from the general ApplicationContext because it handles the subject and finds the

Multiple choice questions 1:Set float a = 2, B = 4, C = 3;, the followingC LanguageWhich of the following statements is inconsistent with the calculation result of A + B + C?A. (A + B) * C/2B. (1/2) * (a + B) * CC. (A + B) * C * 1/2D. c/2 * (A + B)Reference answer: B, because all three variables A, B, and C are floating-point numbers, the result of B is 0, because 1/2 is 0. If it is changed to 1/2. 0 is correct. 2:To convert binary dataFileTail i

to crash. No primary reference is optional and cannot be set to nil. No primary reference is also implicitly parsed. 18. How to Use semicolons Semicolons are optional in swift, but for the sake of ease of use, Apple recommends that you do not use semicolons any more. However, you may still use semicolons in swift, for example, in loop statements. for var index = 0; index 19. How will swift develop? Currently, SWIFT is only the first version. Apple has a very clear purpose and they will up

subscript, and then the subscript corresponding to the number of +n. PublicListint[] nums) {ListNewArraylist(); intn =nums.length; //use an array subscript to record the number of occurrences for(inti = 0; i ) {nums[(Nums[i]-1)% n] + =N; } //add a[i] less than n i+1 to the array list for(inti = 0; i ) { if(Nums[i] N) {dislist.add (i-W); } } returndislist; }View CodeIdea 3: (Discuss) collation array, the purpose is to the number and sub

I am nearing the collapse. I am very grateful for your answers to several questions about connecting to the database and system settings in the mamp environment! Overview: I recently learned PHP programming. The system is mac OS X 10.11 and the mamp PRO (3.1) integrated environment is used. Problem: put a simple echo php code in the htdocs folder under mamp to display the code, but cannot connect to the d

Answers to important questions about PHP and databases Senior man, I clicked Login in login.html directly to usercontroller.php, and do not show anything, my purpose is to verify the successful login to jump directly to mian.html Unsuccessful then jump to error.html, but not successful, ask me what is wrong, there is a question is how to log on after the success of the login to mian.html? Thank you.

/* This program is to ask the following questions about dummies taking planes: * 100 people are waiting in line to take a plane with 100 seats. Normally, each of them will sit at the opposite number. However, * The first person on the plane was a dumb. He randomly sat in a seat. When the next person got on the plane, if * When a person is seated, he or she will randomly find a seat to sit down. Otherwise, he or she will sit down. Question: Last * What

30 javascript questions and answers that you "cannot do all" (1) 1. The running result of the following expression is: ["1", "2", "3"]. map (parseInt) A. ["1", "2", "3"] B. [1, 2, 3] C. [0, 1, 2] D. Miscellaneous 2. The running result of the following expression is: [Typeof null, null instanceof Object] A. ["object", false] B. [null, false] C. ["object", true] D. Miscellaneous 3. The running result of the

20 Linux Command Interview Questions and answers Q: 1. How can I view the running level of the current Linux server? A: The 'Who-R' and 'runlevel' commands can be used to view the running level of the current Linux server. Q: 2. How do I view the default gateway of Linux? A: run the "route-n" and "netstat-nr" commands to view the default gateway. In addition to the default gateway information, these two co

XXXL transaction log Q: Our products use SQL Server to store data. We will release new product versions from time to time, including upgrade scripts for running databases. As we test our latest upgrade script in a typical test database, the size of the transaction log file has increased to more than 40 GB. We want to prevent log files from growing so large. Which solution can we choose? For the purpose of disaster recovery, we need to continue using the full recovery model. A: First of all, I am

Label: style blog HTTP color Io OS AR Question link: http://poj.org/problem? Id = 2371 Ideas: Sort by count or other time complexity as O (log n. Code: # Include Poj_2371 Questions and answers