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Linux Related Questions AnswerLinux Face Test Answer hypothesis apache The log format is: Span style= "Font-family:tahoma" > 118.78.199.98–-[09/jan/2010:00:59:59 +0800] "get/public/css/ Index.css http/1.1″304– "http://www.a.cn/common/index.php" "mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; GTB6.3) " problem 1 : in apachelog 10 ip awk ' {print '} ' Apache_log |sort |uniq-c| Sort-nr|head-n awk First, the in

First step: Find all files in the/oldboy directory and its subdirectories that end with the extension. shFind all Files:[Email protected] oldboy]# find/oldboy/-type f/oldboy/t.sh/oldboy/test.sh/oldboy/test/del.sh/oldboy/alex.txt/ Oldboy/oldboy.txtFind all files ending with. sh[Email protected] oldboy]# find/oldboy/-type f-name "*.sh"/oldboy/t.sh/oldboy/test.sh/oldboy/test/del.sh13.2 Step Two: How to replace the Oldboy in a file with the Oldgirl[[email protected] oldboy]# #sed ' s# What you're l

Wireless networks are becoming increasingly popular, and we can build a small wireless network at home, which inevitably reveals some problems. So let's take a look at some of the home wireless WLAN technology to help you with the answers to the questions. Home Wireless WLAN technology Qamp;a 1.WLAN=GPRS? once had a lot of friends asked, equipped with wireless network card notebook computer in connectio

is used for medium-sized and large-scale data applications. The serial collector is sufficient for most small applications, which require about 100M of memory on modern processors.41. In Java, when can objects be garbage collected?This object can be recycled when the object becomes inaccessible to applications that currently use the object.Is there a garbage collection in the permanent generation of 42.JVM?Garbage collection does not occur in a permanent generation, and if it is permanently ful

selector: directly based on the ID, CSS class name, element name to return the matching DOM elements. 2, hierarchical selector: Also known as the path selector, you can select the corresponding DOM element according to the path hierarchy. 3. Filter selector: Filter the relevant conditions on the previous basis to get the matching DOM elements. Question: Use jquery to set all the element borders on the page to a 2px wide dashed line? Answer: This is the time for the jquery selector to play, the

conserve bandwidth and the stability of script references, we use jquery files on the CDN, such as Google's jquery CDN service. However, if the jquery service on these cdns is not available, we can also switch to the jquery version of the local server by using the following code:HTML code --------------------------------------------------I'm a split line-------------------------------------------------------------- 6, how to use jquery implementation Click Button Pop up a dialog box?Answer: The

. Combining these two technologies with SVM is one of the reasons why SVM classifier is simple and powerful.Problem description A Gaussian core is usedTraining SVM (Support Vector machine), the test proves that if there are no two points in the same position in a given training set, there is a set of parameters {α1, ... αm, b} and parameter gamma make the SVM training error of 0. If we use the parameter gamma in question 1 to train a SVM that does not join the relaxation variable, w

load Java extension libraries. The implementation of the Java virtual machine provides an extension library directory. The class loader finds and loads Java classes in this directory.3. Systems Class Loader (System class loader): It loads Java classes based on the Java application's Classpath (CLASSPATH). In general, Java-applied classes are loaded by it. It can be obtained by Classloader.getsystemclassloader ().4. User-defined ClassLoader, implemented by inheriting the Java.lang.ClassLoader cl

amount of the month, Debitoccur: The amount of the occurrence.Database name: Jcyaudit, Data set: Select * from TestDBAnswer: Select A.*From TestDB A, (select Occmonth,max (debitoccur) debit101ccur from TestDB where accid= ' 101 ' GROUP by Occmonth) bwhere A.occmonth=b.occmonth and A.debitoccur>b.debit101ccur************************************************************************************Interview question: How to put such a tableYear Month amount1991 1 1.11991 2 1.21991 3 1.31991 4 1.41992 1

NULL5 8 NULLNULL NULL 9------------------------------------------1)Select a. department name Dname,b. Performance YJ as ' January ', c. Performance YJ as ' February ', d. performance YJ as ' March 'From table1 a,table2 b,table2 c,table2 DWhere a. DEP Department = B. DEP department and b. Month Mon = ' January ' andA. Department dep = c. DEP department and c. Month Mon = ' February ' andA. Department dep = D. Department DEP and d. Month Mon = ' March ' and2)Select A.DEP,SUM (case if B.mon=1 then

is very likely that there will be multiple lines of text in the actual edits at this point we use the command to display the line number so that we can better edit the text.Specific description of the general mode of deletion, copy and paste?A: Previously deleted one character and deleted one character backwards: x,xDelete cursor Line: DDDelete cursor down n rows: nddCopy cursor line: yyCopy cursor down n line: NyyPaste from the next row and previous line on the lines: P and PHow do I enter edi

pipeline to achieve this need.[email protected] ~]# Cat File_name.txt | More8. Q: Which user does the data dictionary belong to?A: The data dictionary belongs to the ' sys ' user, and the user ' sys ' and ' Sysem ' are automatically created by default by the system.9. Q: How do I view a summary and usage of a Linux command?Suppose you accidentally see a command in the/bin directory that you've never seen before, how do you know how it works and how it's used?A: Using the command Whatis can show

Oracle Database Development interview questions, I did not do the test at that time, now with the original questions and answers, oracle Test 1, ID123567810111215 Table Name tt. use SQL to find the non-consecutive IDs in the ID column, for example, 4 which does not exist: -- Create table and data create table tt (id integer ); insert into tt SELECT 1 FROM dualUNI

Question one: What do you want the work environment to be like?Standard answer: I am not demanding on the environment, I will try to adapt to the environment.Note: This is a question of whether you are testing your job search mentality, whether you are centered on yourself or on the job.Question two: What shortcomings do you think you have?Standard answer: Say some of the small shortcomings of this position, or say that their "shortcomings" is no work experience.Note: This problem is very sinist

Beijing University of Aeronautics and Astronautics computer department postgraduate review computer real questions and answers --- first-level Construction Engineer real questions Question 1: factorial. Enter a positive integer. when outputting, output the number itself, followed by a comma, and then output the factorial and equal signs of the numbers, The calcul

1503150049-blue bridge cup-Incorrect tickets for previous questions, answers to previous questions of Blue Bridge cupPrevious exam errors ticket time limit: 1.0 s memory limit: 256.0 MBProblem description A confidential organization issues a certain ticket and must withdraw it all at the end of the year. Each ticket has a unique ID number. The IDS of all bills fo

Concise answers to several java interview questions, concise java interview questions The difference between equal and = in java: The equal method is used to compare object references unless it is overwritten (such as String class and basic type package class. And ==except for comparing basic types, it is a comparison value. In other cases, it is a comparison ref

This article focuses on the question of Ajax questions and answers, you can take a look at the interview of those who are how to issue, and see what the correct answer is. Now, let's see this article. 1. Do you interact with the background during work? Well, can you tell me a few parameters in the encapsulated Ajax? URL: The address where the request was sent. Type: The request method (post or get) defaults

PHP 11 Most frequently asked questions and answers, PHP questions Are you looking for a PHP development job, and are you looking for some questions and answers about PHP? This article shares some of the 11 most frequently asked PHP interview

Interview questions about the Linux firewall ' iptables 'Nishita Agarwal, a tecmint user, will share an interview experience with a company she has just experienced (Pune, a private company in India). She was asked many different questions during the interview, but she was an expert on iptables, so she wanted to share these questions about iptables and the