ls -a list all 查看所有文件（包括隐藏文件 如.bash）pwd 当前位置 print work directorycd.. 回到上一级目录波浪号~表示当前根目录（home家目录） su - 切换到其他用户（超级管理员root #开头，普通用户$开头）whoami 查看当前用户who
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系统相关 时间：
2016-03-22 07:53:41
阅读次数：
191
Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL query to find all customers who never order anything
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数据库 时间：
2016-03-21 19:45:39
阅读次数：
197
文章转至：http://www.codeproject.com/Articles/98346/Microsecond-and-Millisecond-NET-Timer IntroductionAnyone who has used the .NET System.Timers.Timer clas
Imagine you're an engineer who has been asked to design a computer from scratch. One day you're working away in your office, designing logical circuit
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Web程序 时间：
2016-03-20 14:21:22
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832
In 'MonkeyLand', there is a traditional game called "Bamboo Climbing". The rules of the game are as follows: 1) There are N monkeys who play this game
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其他好文 时间：
2016-03-19 22:48:34
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246
9 Find any Clerk who is not in department 10. SELECT * FROM EMP2014170165 E WHERE JOB = 'CLERK' AND DEPTNO <> 10 ORDER BY EMPNO 13 Find all the employ
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数据库 时间：
2016-03-17 12:16:37
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358
Here's to the crazy ones. The misfits. The rebels. The troublemakers. The round pegs in the square holes. The ones who see things differently. They're
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移动开发 时间：
2016-03-14 18:36:41
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219
1 /*Apply a Buffer trick in who3.c*/ 2 3 #include <stdio.h> 4 #include <stdlib.h> 5 #include <utmp.h> 6 #include <fcntl.h> 7 #include <unistd.h> 8 #in
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系统相关 时间：
2016-03-07 23:54:27
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369
Race Four races are available for those who wish to choose the path of martial arts: the careful Gon, the playful Lyn, the elegant Yun, and the hardwo
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其他好文 时间：
2016-03-06 19:19:41
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303
Question: Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL query to find all customers who never orde
分类：
数据库 时间：
2016-03-05 21:53:33
阅读次数：
175
