The Command, PID, and User columns represent the name of a process, process identifier ( PID), and owner's name, respectively. PID和User列分别表示进程的名称、进程标识符(PID)和所有者名称。
Each command you run is assigned a sequential, numerical identifier. 您所运行的每个命令都会分配到一个顺序的数值标识符。