Common network Management commands for "Linux"

Last: View current and past user login information

[[email protected] ~]# lastroot pts/0 192.168.1.106 Fri June 09:53 still logged in admin tty1               : 0   Fri June 09:47 still logged in root tty5 Fri June 09:31 still logged in reboot  System boot 2.6.32-431.el6.x Fri June 17:35-09:56 ( -7:-38) root tty5 Fri June 3 07:31                          -Down (00:34) reboot system boot 2.6.32-431.el6.x Fri June 3 07:27-08:06 (00:39) root tty5               Fri June 3 07:21-down (00:04) Admin tty1:0     Fri June 3 07:21-down (00:05) reboot system boot 2.6.32-431.el6.x Fri June 3 07:09-07:26 (00:16) root               Tty5 Fri June 3 07:01-down (00:07) Admin tty1:0     Fri June 3 06:57-down (00:10) reboot system boot 2.6.32-431.el6.x Fri June 3 06:57-07:08 (00:11) root Tty5 Fri June 3 06:28-Down (00:27) admin tty1:0    Fri June 3 06:28-down (00:27)

 lastlog: Show only user last logon information

[[email protected] ~]# lastlog Username Port from Latestroot pts/0 192.168.1.1                                     Fri June 09:53:00 +0800 2016bin **never logged In**daemon                                         **never logged in**adm **never logged IN**LP                                   **never logged In**sync **never logged In**shutdown                                       **never logged In**halt **never logged In**mail                                   **never logged IN**UUCP **never logged In**operator                                     **never logged in**games **never logged In**gopher                              **never logged in**ftp **never logged In**nobody       **never logged In**dbus **never logged In**rpc                                       **never logged in**oprofile **never logged IN**VCSA                                       **never logged In**rtkit **never logged IN**ABRT                                     **never logged IN**AVAHI-AUTOIPD **never logged in**hsqldb                                    **never logged In**saslauth **never logged In**rpcuser                                    **never logged in**nfsnobody **never logged In**postfix                                  **never logged In**ricci **never logged In**haldaemon                                        **never logged IN**GDM **never logged IN**NTP **never logged In**apache **never logged In**amandabackup                                     **never logged in**pulse **never logged In**tomcat                                       **never logged in**sshd **never logged In**luci                                    **never logged in**mysql **never logged In**dovecot                                    **never logged in**dovenull **never logged In**tcpdump **never logged in**admin tty6 Fri May 27 06:10:56 +0800 2016

 traceroute: View network path

[[email protected] ~]# traceroute www.163.comtraceroute to Www.163.com (42.81.28.74), hops max, byte packets 1 192.168.1.1 (192.168.1.1) 0.236 ms 0.197 ms 0.454 MS 2 10.8.0.1 (10.8.0.1) 4.405 ms 4.396 ms 4.382 ms 3 172.16.3. 173 (172.16.3.173) 2.765 ms 2.750 ms 2.632 MS 4 172.16.33.1 (172.16.33.1) 2.947 ms 3.503 ms 3.492 MS 5 10.1.1.1 (1 0.1.1.1) 3.485 Ms 3.460 MS 3.453 MS 6 * * * 7 * * * 8 123.151.29.73 (123.151.29.73) 7.249 Ms 219.150.51.105 (219.15 0.51.105) 4.883 Ms 123.151.29.73 (123.151.29.73) 7.226 Ms 9 221.238.222.101 (221.238.222.101) 2.943 Ms 219.150.38.141 (219.150.38.141) 3.252 Ms 219.150.38.229 (219.150.38.229) 4.826 ms10 42.81.32.22 (42.81.32.22) 4.197 Ms 4.122 MS 4.1 MS11 42.81.1.54 (42.81.1.54) 7.702 Ms 42.81.1.6 (42.81.1.6) 209.992 Ms *12 42.81.0.166 (42.81.0.166) 9.554 Ms 42.8 1.0.194 (42.81.0.194) 8.810 Ms 42.81.0.190 (42.81.0.190) 8.765 ms13 42.81.28.74 (42.81.28.74) 4.167 ms 4.650 MS 3.41 3 ms

Netstat: viewing network conditions

Parameters:-t:tcp Protocol

-U:UDP protocol

-l:listen Monitoring

-R: Routing

-N: Display IP and port number

Common usage: Netstat-tlun # #显示本机监听的端口

Netstat-an # #显示本机所有网络连接

NETSTAT-RN # #显示本机路由信息

Setup: Access to the managed graphical interface

　

　

Common network Management commands for "Linux"