对函数select()的测试

it a code for knapsack

在Linux系统的/etc目录下有这样一个文件passwd，该文件里包含系统中所有用户信息的记录，记录里包含每个用户的如下信息：用户名、密码、用户ID、组ID、用户全名、用户主目录和用户登录所用的shell。请设计一个脚本（shell）程序能实现增加、删除、查找和显示特定用户信息的功能。你们可以通过创建一些UNIX/LINUX shell 脚本文件来满足以上需求。-In the Linux system,/etc directory there is such a file passwd, this file contains all the user information system, records, record where each user that contains the following information: user name, password, user ID, group ID, user" s full name , the user" s home directory and the user logged in with the shell. Please design a script (shell) program enables to add, delete, search and display information on a specific user function. You can by creating a number of UNIX/LINUX shell script file to meet the above requirements.

opencv3.1 linux源代码 安装包-opencv3.1 linux

LED控制 ARM LPC2129 汇编程序-LED control LPC2129 ARM assembler

跨平台,多数据库查看编辑和查询工具,平台支持windows,linux,数据库支持oracle,odbc,mysql,slite等-Cross-platform, multi-view editing and database query tools, platform support for windows, linux, database support oracle, odbc, mysql, slite, etc.

理财小工具，wxwindow的gui-fiscal small tools, the gui wxwindow

一个在linux下跟踪内存泄露的小程序,一般在linux下可以用 mtrace valgrind来做,但是在嵌入式上,由于内存的限制,mtrace valgrind都显得束手无策-Tracking a memory leak under linux small procedures, usually under linux can be used mtrace valgrind to do, but in the embedded, due to memory limitations, mtrace valgrind are able to do much about

修改后的thttp-revise the thttp

当前不少单位在进行系统改造升级时，面临着如何将各个独立部门开发的应用所采用的数据库统一，以便适应数据大集中的需求，方便将来进行数据挖掘等更高层次的应用。在数据库统一的过程中，如何快速、高效的将已有的基于异种数据库的程序，特别是采用C/C 开发的运行于linux/unix下的程序转换到现有数据库下，成为不少单位面临的问题。当然了，基于RAD开发的程序，基本上不需要进行修改，就能达到目的。 -Many units in the current system upgrades are faced with how to integrate all the independent sector to develop applications using a unified database in order to meet the data needs of large centralized to facilitate future data mining and other higher level applications. The process of reunification in the database, how to quickly and efficiently will have been based on heterogeneous database procedures, in particular the use of C/C development running on linux/unix procedures under the switch to an existing database, became quite a number of units the problems faced. Of course, RAD-based development process, basically do not need to be modified, we can achieve the objectives.

44b0的启动代码，包含FLASH的读写，TFTP下载应用程序。加载运行用户程序等。-44b0 bootcode include FLASH literacy, TFTP download applications. Users load operation procedures.