linux系统命令

yum

语法	作用
yum list installed	显式已经安装的包
yum list xxx	查找可安装xx的包
yum install xxx	安装xxx的包
yum remove xxx	卸载xxx的包
yum deplist xxx	列出xxx的包依赖
yum -y	自动选择是
yum info	显式软件包的信息
yum update	升级所有的包
yum check-update	检查可更新的程序

更换centos镜像

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

grep -rl 'cloud.aliyuncs' ./ | xargs sed -i 's/cloud.aliyuncs/aliyun/g'

yum clean all

yum makecache

更换epel源

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

yum clean all

yum makecache

gcc编译

yum -y install gmp-devel yum -y install mpfr-devel yum -y install libmpc-devel yum -y install bzip2 wget https://mirrors.ustc.edu.cn/gnu/gcc/gcc-7.3.0/gcc-7.3.0.tar.gz ./contrib/download_prerequisites mkdir gcc-build-7.3.0 cd gcc-build-7.3.0 ../configure --enable-languages=c,c++ --disable-multilib --with-system-zlib --prefix=/usr/local/gcc7.3.0 make -j export LD_LIBRARY_PATH=/usr/local/gcc7.3.0/lib64:$LD_LIBRARY_PATH

创建交换分区

sudo dd if=/dev/zero of=/swapfile bs=1M count=4096 # 1 * 2048 = 2048 创建 1 g 的内存分区 sudo mkswap /swapfile sudo swapon /swapfile sudo swapoff /swapfile sudo rm /swapfile

参考资料

CentOS 初体验三： Yum 安装、卸载软件 https://blog.csdn.net/zhaoyanjun6/article/details/78894974

Redhat 或者centos 更换第三方epel源 https://developer.aliyun.com/article/516685