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把原来的静态IP从150改成151后，执行/etc/init.d/networking restart 后，150和151同时生效了。如下ens33，151IP变成secondary sip@ubuntu:~$ ip addr1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen

 sudo vim /etc/network/interfaces修改如下# The primary network interfaceauto ens33#iface ens33 inet dhcpiface ens33 inet staticaddress 192.168.1.150netmask 255.255.255.0gateway 192.168.1.1增加D...

错误如下CMake Error in CMakeLists.txt: No CMAKE_CXX_COMPILER could be found. Tell CMake where to find the compiler by setting either the environment variable "CXX" or the CMake cache entry CMA...

error while loading shared libraries:libmpfr.so.4: cannot open shared object file: No such file or directory.解决：sudo ln -s /usr/lib/x86_64-linux-gnu/libmpfr.so.6 /usr/lib/x86_64-linux-gnu/libmpfr.so...