Linux环境下进程信息查看和作业控制。

【操作要求】虚拟终端1（root用户）利用vi新建f1.txt文件，将vi作业挂起；后台启动find进程；显示当前所有作业和进程号；显示所有进程含优先级的进程详细信息，并画出进程家族树后，中止find进程的后台运行。虚拟终端2（student用户）启用vi新建f2.txt文件,其优先级为5, 后台启动find进程，显示含优先级的进程详细信息；再将student用户进程的优先数改为-5，显示含优先级的进程详细信息。写出相应操作步骤。-Linux environment to view and job control process information. [Requirements] virtual terminal operator 1 (root user) using the vi New f1.txt file, vi job hangs　background to start find the process　displays all current jobs and the process number　displays all processes with priority process details and After the draw process, family tree, suspend find processes running in the background. Virtual Terminal 2 (student users) enabled vi New f2.txt file, its priority is 5, the background process starts find, display priority process containing detailed information　then student user process priority number to-5, display with priority process details. Write the corresponding steps.