## Ubuntu
cd /usr/lib/x86_64-linux-gnu/
## CentOS
cd /usr/lib64

ll |grep libstd
strings libstdc++.so.6 | grep GLIBCXX
## 有可能找不到 GLIBCXX_3.2.26

locate libstdc++.so.6

strings /usr/local/gcc/lib64/libstdc++.so.6 | grep GLIBCXX
cp /usr/local/gcc/lib64/libstdc++.so.6 /usr/lib/x86_64-linux-gnu
strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX