执行net-snmp测试程序，提示Cannot find module (SNMPv2-MIB): At line 0 in (none)

写了一个基于net-snmp库的测试程序，获取交换机信息，有些奇怪的提示

MIB search path: /root/.snmp/mibs:/usr/local/share/snmp/mibs
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
Cannot find module (NOTIFICATION-LOG-MIB): At line 0 in (none)
Cannot find module (DISMAN-EVENT-MIB): At line 0 in (none)
Cannot find module (DISMAN-SCHEDULE-MIB): At line 0 in (none)
Cannot find module (UCD-SNMP-MIB): At line 0 in (none)
Cannot find module (UCD-DEMO-MIB): At line 0 in (none)
Cannot find module (SNMP-TARGET-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-AGENT-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-TYPES): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (IP-FORWARD-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-PASS-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-EXTEND-MIB): At line 0 in (none)
Cannot find module (UCD-DLMOD-MIB): At line 0 in (none)
Cannot find module (SNMP-NOTIFICATION-MIB): At line 0 in (none)
Cannot find module (SNMPv2-TM): At line 0 in (none)
Cannot find module (NET-SNMP-VACM-MIB): At line 0 in (none)
1 3 6 1 2 1 1 5 0 STRING: "HUAWEI"

参考了这个找到解决方法：

https://blog.youkuaiyun.com/qq_27204267/article/details/51679191

原来我安装net-snmp时候，路径跟默认的不同

使用懒人方法，直接把

拷贝到默认目录/usr/local/share/snmp/mibs，问题解决，不知道有没有后患。