请问一下怎么清除终端执行一会ping输出的日志呢

# ping www.163.com
[50027.590790] RTW: rtw_cpwm_polling: polling cpwm OK! rpwm_retry=0, cpwm_orig=00, cpwm_now=80 , 0x100=0x3f
[50027.721631] RTW: rtw_cpwm_polling: polling cpwm OK! rpwm_retry=0, cpwm_orig=80, cpwm_now=00 , 0x100=0xff
PING www.163.com (183.232.112.86): 56 data bytes
[50028.004902] RTW: rtw_cpwm_polling: polling cpwm OK! rpwm_retry=0, cpwm_orig=00, cpwm_now=80 , 0x100=0xff
[50028.017862] RTW: rtw_set_ps_mode(wlan0) Leave 802.11 power save - WIFI-LPS_CTRL_LEAVE
[50028.026738] RTW: rtl8723d_set_FwPwrMode_cmd(): FW LPS mode = 0, SmartPS=2
[50028.080129] RTW: rtw_set_ps_mode(wlan0) Enter 802.11 power save - WIFI-TRAFFIC_IDLE
[50028.089088] RTW: rtl8723d_set_FwPwrMode_cmd(): FW LPS mode = 2, SmartPS=2
[50028.098047] RTW: Turbo EDCA =0x5ea42b
64 bytes from 183.232.112.86: seq=0 ttl=55 time=684.100 ms
[50028.705825] RTW: rtw_cpwm_polling: polling cpwm OK! rpwm_retry=0, cpwm_orig=80, cpwm_now=00 , 0x100=0x3f
[50028.717281] RTW: rtw_set_ps_mode(wlan0) Leave 802.11 power save - WIFI-LPS_CTRL_LEAVE
[50028.731229] RTW: rtl8723d_set_FwPwrMode_cmd(): FW LPS mode = 0, SmartPS=2
64 bytes from 183.232.112.86: seq=0 ttl=55 time=1289.383 ms (DUP!)
64 bytes from 183.232.112.86: seq=1 ttl=55 time=379.495 ms
64 bytes from 183.232.112.86: seq=2 ttl=55 time=88.362 ms
64 bytes from 183.232.112.86: seq=3 ttl=55 time=70.652 ms
[50032.080123] RTW: rtw_set_ps_mode(wlan0) Enter 802.11 power save - WIFI-TRAFFIC_IDLE
[50032.089156] RTW: rtl8723d_set_FwPwrMode_cmd(): FW LPS mode = 2, SmartPS=2
64 bytes from 183.232.112.86: seq=4 ttl=55 time=96.217 ms

试一试：
echo 7 > /proc/sys/kernel/printk