界面头文件

写一个脚本文件checkuser,该脚本运行时带一个用户名作为参数，具体要求如下： 1)如果命令行格式不符合要求，应有错误提示信息； 2)在/etc/passwd文件中查找是否有该用户， 如有，则输出“Found in the /etc/passwd file.” 否则，输出“No such on our system” -Write a script file checkuser, the script run-time with a user name as a parameter, and specific requirements are as follows: 1) If the command-line format does not meet the requirements, there should be error message 2) in/etc/passwd file to check if there were any users, and if so, then the output " Found in the/etc/passwd file. " Otherwise, output" No such on our system "

在UNIX/LINUX下面挂起一个进程并在SHELL下观察进程.-in UNIX/LINUX hang below a process and the SHELL under observation process.

Linux 新手管理员手册中文版，适用于linux新手管理员-Chinese edition of LINUX_NEWBIE_ADMINISTRATOR_GUID,for linux novice administrator.

一个很好的busybox-a very good busybox.

linux device driver examples

清华大学－电子信息工程系－实验用ARM-linux－源代码－SYS篇-Tsinghua University- Electronic Information Engineering- experiment with ARM-linux-source code-SYS articles

该文件流操作函数，包括打开指定目录，查询目录文件，返回当前目录，获取文件大小等文件相关操作-The document flow manipulation functions, including opening the specified directory, query directory file, return to the current directory, access to the file size and other documents related to the operation

在unix下的图形化编程，用tcl提供了很好的解决方案，结合tk能实现非常多的功能-in the graphical programming with peers provides a good solution, combining tk can achieve a lot of functionality

linux 1000常见问题集，适合初级人员。-linux 1000 Frequently Asked Questions for junior staff.

Qt 4 中文版的书，目前此类书很少，qt 4的中文版的就更少了。主要讲解qt 4的入门，软件的安装之类的，是一个超级棒的入门教材！-Qt 4 The Chinese version of the book, currently very few such books, qt 4 of the Chinese version even less. On the qt 4 main entry, software installation like it is a superb introductory textbooks!