10 k vs 10 q

1. Add 10 users in a loop:#!/bin/bash#For i in {1..10}; DoIf ID user$i >/dev/null; Thenecho "user$i exists."ElseUseradd user$iecho user$i | passwd--stdin user$i >/dev/nullecho "Add user user$i finished."FiDone2. Round-robin deletion of 10 users:#!/bin/bash#For I in {1..10}; DoIf ID user$i >/dev/null; ThenUserdel-r user

PHP Development of 10 Common code samples, PHP development of 10 examples First, blacklist filter Second, random color generator Third, download the file from the Internet Set_time_limit (0); Supports all file types//urls here: $url = ' http://somsite.com/some_video.flv '; $pi = PathInfo ($url); $ext = $pi [' extension ']; $name = $pi [' filename ']; Create a new CURL resource $ch = Curl_init (); Set URL

Topic:There are 10 million text messages, there are duplicates, in the form of a textual file saved, one line. Please use 5 minutes to find the top 10 duplicates.struct Tnode{Byte* Ptext;Memory address directly pointing to the file mapDWORD dwcount;Calculator, recording the same number of messages for this nodetnode* childnodes[256];Child node data, because the ASCII value of one letter cannot exceed 256, s

10 Useful PHP Open source tools, 10 PHP open source In development work, the right tools are used to maximize efficiency. In addition, a large number of open source projects also save developers from repeating the "wheel" time, so that developers can focus on the implementation of the business. This article introduces 10 very useful and open source PHP developme

10 sort algorithms (code and description) and 10 sort Algorithms 1. Bubble Sorting The basic idea is to compare the key words of adjacent records in two or two pairs. If the reverse order is used, the key words are exchanged. The best case of Bubble Sorting time complexity is O (n), and the worst case is O (n ^ 2) Improvement Method 1: Set the flag bit. Obviously, if there is no switching (flag = false), th

Ubuntu dual-system does not support mounting windows 10 hard drives. Ubuntu windows 10 My computer is a Ubuntu 14.04 dual-system installed in Windows 10. Today, I access the Windows 10 disk in Ubuntu, and the following error occurs: Error mounting/dev/sda1 at/media/linuxidc/WIN7: Command-line 'mount-t "ntfs"-o"Uhelper

Windows 10 is handled. Chinese hackers win Windows 10 through Edge. Lu renjia: tell a joke. Passerby B: Windows is safe. Passerby A + passerby B: Haha In order to make such a joke a historical one, Microsoft joined hands. Do not underestimate Windows 10, at the time of development, Microsoft joined numerous advanced security mechanisms (control flow Execution Pr

A 10*10 matrix (which can be understood as a chessboard), generates a set of data at any time and fills in the Matrix. Numbers at any position are calculated except 4 and colored by the remainder, if the remainder is 0, the color is red, 1 is blue, 2 is green, and 3 is black. It can be understood that the color of 4 is generated and placed on the board, if one of the five stars with the same color is connec

earlier-13 classical algorithm research series, strives to be easy to understand and analyze various classic algorithms in detail, and programming. Part 3: Coding literacy, mainly including some coding standards in the coding process of programmers and other issues that need attention. If possible, this TAOPP series will take the form of TAOCP to produce the first, second ,.... Where does programming art come from? What is the proper data structure for programming? Looking for more efficient al

CNET listed the top 10 (the best 10) and top 10 worst (the worst 10) Products in the last month, which is quite interesting. Top 10: IPod (2001) TiVo (1999) Google (1, 1996) Napster (1999) Firefox (1, 2004) PalmPilot (1996) Motorola startacs (1996) A

10 typical JavaScript books recommended at different levels + package download, 10 javascript Recently, I am working on some js jobs. through the promotion of various great gods, I have compiled 10 typical js books. (At the end)As a scripting language, js plays an indispensable role in web development. The launch of html5.How can I learn the js language? I have d

"C and Pointers" chapter 8th programming Exercises 3rd:1 /*2 * * Determine if a 10*10 matrix is a unit matrix3 */4 5#include 6 #defineROW 107 #defineCOL 108 9 /*Ten * * Function accepts a matrix of 10*10 One * * Determine if it is a unit matrix A * * return value: - * * is the unit matrix, returns 1 - * * Not a unit ma

To put it bluntly, let alone: (For this post, I decided to collect some of my favorite quotes related to the programming. These programming quotes were made by some of the famous personalities in the IT industry. So, without wasting any time, here are my 10 favorite programming quotes .) If debugging is the process of removing software bugs, then programming must be the process of putting them in.-edsger Dijkstra -In the past few year

//in the main method, define a two-dimensional character array of size 10*10, the array name is Y, the positive and negative diagonal is ' * ', the remaining position is ' # ', and all the elements in the array are output. Char[][]y=New Char[10] [10]; for(inti=0;i) { for(intj=0;j)

10. C ++-constructor initialization list, object construction sequence, destructor, 10. c Constructor First, recall,Previously learned const Separate useConst ModificationVariables are defined.ConstantFor example, const int I = 1; UseVolatile const ModificationVariable is definedRead-Only variables UseConst ModifierVariable is definedRead-Only variables Can a const be defined in a class?Member? Directly wr

10 basic Python usage that is easy to ignore but should be mastered, 10 ignore python usageI have been writing code all my life, but I have never mastered the essence of code. In most cases, Visual Basic is used because I use VB most comfortably. I also learned a little about other languages (R, C, JavaScript, Applescript, Hypertext, and basic I learned in 1979 ). A few years ago, I decided to use only Pyth

10 suggestions for improving Web application performance by 10 times Improving the Performance of web applications is never more important than now. The proportion of the network economy has been growing; more than 5% of the global economy value is produced on the Internet (see the following information for data ). This time online hyper-connection world means that users' expectations are also at the highes

10 jQuery-based dashboard with navigation focus charts and 10 jquery 1. Pure CSS3 for 3D effects iPhone 6 Animation Shortly after the release of the iPhone 6, we used pure CSS3 to plot the appearance of the iPhone 6. Remember that it was implemented with pure CSS3 and didn't use an image. Due to the use of CSS3 features, the entire iPhone 6 mobile phone has a shadow border and has a 3D visual effect. Onlin

How to solve the problem of not receiving windows 10 push and not receiving windows 10 push Microsoft has officially pushed the long-awaited windows 10 system to users. Some users who have installed Windows 7 and Windows 8 systems may have received official Microsoft push notifications. If you have not received the message, refer to the method described here.

What are the top 10 misunderstandings about PHP ?, Top 10 misunderstandings of php. What are the top 10 misunderstandings about PHP ?, The top ten misunderstandings of php are several developers. you often see news such as the reasons for not using XX on the Internet. What are the top ten misunderstandings about PHP as the most popular open source ?, Top