Linux安装rar、unrar 下载二进制文件wget https://www.rarlab.com/rar/rarlinux-x64-701.tar.gz解压tar zxvf rarlinux-x64-701.tar.gz -C /usr/local创建连接ln -s /usr/local/rar/rar /usr/local/bin/rar ln -s /usr/local/rar/unrar /usr/local/bin/unrar

'GLIBCXX_3.4.21' not found 1、首先检查gcc版本gcc -vgcc5.4存在'GLIBCXX_3.4.21'2、安装所需工具：yum groupinstall "Development Tools" yum install glibc-static libstdc++-static3、安装gccwget http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-5.4.0/gcc-5.4.0.tar.bz2 tar -xvf gcc-5.4.0.tar.bz2 cd gcc-5.4.0 ./contrib/download_prerequisites mkdir build cd build ../configure --enable-checking=release --enable-languages=c,c++ --disable-multilib make && make install耗时很长，建议使用screen后台执行安装完了重启电脑。cp /usr/local/lib64/libstdc++.so.6.0.21 /lib64 cd /lib64 rm -rf libstdc++.so.6 ln -s libstdc++.so.6.0.21 libstdc++.so.64、查看GLIBCXX执行以下命令来查看’GLIBCXX_3.4.21’strings /lib64/libstdc++.so.6 | grep GLIBCXX_3.4.21转载自：https://www.cnblogs.com/awakenedy/articles/11052216.html