yum

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1. 查询所属包 yum provides */nohup 可以查询nohup属于哪个包 2. 查询可安装包 yum list | grep jdk 3. 查询已安装包 rpm -qa | grep jdk 4. 删除已安装包 yum remove mysql-community-server-5.6.36-2.el7.x86_64 5. 更新yum源 cd /etc/yum.repos.d/ wget http://mirrors.aliyun.com/repo/Centos-7.repo //下载 mv CentOs-Base.repo CentOs-Base.repo.bak //备份系统 mv Centos-7.repo CentOs-Base.repo //替换 yum clean all yum makecache yum update //执行yum源更新命令 6. 安装ssserver yum install python-setuptools && easy_install pip pip install shadowsocks 7. 限速和断点续传 https://blog.csdn.net/a632189007/article/details/75208336 wget -c -limit-rate=200k //-c断点续传 限速