top: show running processes, memory usage and similar stats | 查看运行的进程iostat: show I/O per terminal, device and SPU summery statistics |查看io状态vm_stat: show Mach virtual memory statistics | 查看虚拟机运行内存统计dfanddiskutil list: report on drive space used and free | 查看设备存储fs_usage: show file activity for both disk and network | 查看网络和磁盘的活动nettop: display updated information about the network (a bit like top for net I/O) | 查看网络信息w: display who is logged in, what they are doing and system load | 查看 登录用户是谁，做了什么，和系统加载ifconfigandipconfig: network interface and IP protocol details | 查看ip
参考：https://apple.stackexchange.com/questions/39345/can-i-view-system-stats-in-the-terminal