QCad 是2D CAD 程序 Linux-QCad version 2.x. QCad is a simple 2D CAD program which runs under Linux, Windows, Mac OS X and several Unix systems.

基于C语言的指纹识别源代码，读者在应用这些代码时，可能会需要根据自己的应用需求对代码进行一定的改动。对于Linux/UNIX下编译C程序不熟悉的读者，可以参考相关的Linux/UNIX下的C语言编程 书籍。-The fingerprint identification based on C source code, and the readers in application of these code, may need according to their application to

基于UNIX、Linux的X窗口下的RAS格式图片文件显示程序。-RAS format image files based on UNIX, Linux X Window display program.