geekos中ELF介绍和用法。熟悉ELF文件格式，了解GeekOS系统如何将ELF格式的用户可执行程序装入到内存，建立内核进程并运行的实现技术。-geekos in the introduction and use of ELF. Familiar with the ELF file format, to understand how the system will GeekOS users ELF format executable program loaded into memory, the establishment of core process and the operation of technology.