top
\---->enter:"d" ---------> Change delay from 3.0 to: 2 ///将刷新时间从 3.0 s 改成 2.0s ! 3.0s 是它的全局的系统默认设置!
\---->enter:"1" --------->如果有多个CPU [cpu(0),cpu(1)..],会分开显示cpu的信息! 再按 "1",恢复整体的CPU [cpu(s)] 信息!
top 过滤对应的进程 [参考]
top -c -p $(pgrep -d',' -f string_to_match_in_cmd_line)