[root@web ~]# uptime
13:44:25 up 16 days, 3:12, 1 user, load average: 0.00, 0.00, 0.00
查看进程：
[root@web ~]# top
top - 13:45:14 up 16 days, 3:12, 1 user, load average: 0.00, 0.00, 0.00
Tasks: 76 total, 1 running, 75 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 254236k total, 167976k used, 86260k free, 396k buffers
Swap: 524280k total, 21620k used, 502660k free, 44216k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25303 root 20 0 2272 972 788 R 0.3 0.4 0:00.03 top
1 root 20 0 2112 648 564 S 0.0 0.3 0:02.03 init
2 root 15 -5 0 0 0 S 0.0 0.0 0:00.01 kthreadd
3 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/0
4 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
6 root 15 -5 0 0 0 S 0.0 0.0 0:00.18 events/0
7 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
58 root 15 -5 0 0 0 S 0.0 0.0 0:00.33 kblockd/0
61 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
62 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kacpi_notify
142 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0
144 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 ksuspend_usbd
149 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 khubd
152 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kseriod
180 root 20 0 0 0 0 S 0.0 0.0 0:01.35 pdflush
181 root 20 0 0 0 0 S 0.0 0.0 0:00.95 pdflush
这都是没有加入参数的情况下显示的。