Autocommand
当有网络工程师远程管理网络设备时，如果用户想限制工程师只能执行用户所指定的命令时，可以使用autocommand功能来实现，但autocommand最多只能执行一条命令；autocommand可以通过有Line vty模式下进行配置来限制所有的远程用户操作，也可以在username命令来限制单个用户的操作命令
配置实例：
 Autocommand_第1张图片
R2(config)#username cisco password cisco
R2(config)#line vty 0 4
R2(config-line)#login local
R2(config-line)#autocommand show ip interface brief
 
R2(config)#username test password test
R2(config)#username test autocommand sh ip route
 
R1#telnet 12.1.1.2
Trying 12.1.1.2 ... Open
User Access Verification
Username: cisco
Password:
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES unset  administratively down down   
FastEthernet1/0            12.1.1.2        YES manual up                    up     
FastEthernet1/1            unassigned      YES unset  administratively down down   
[Connection to 12.1.1.2 closed by foreign host]
 
R1#telnet 12.1.1.2
Trying 12.1.1.2 ... Open
 
 
User Access Verification
 
Username: test
Password:
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route
 
Gateway of last resort is not set
 
     12.0.0.0/24 is subnetted, 1 subnets
C       12.1.1.0 is directly connected, FastEthernet1/0
[Connection to 12.1.1.2 closed by foreign host]
R1#