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1.配置yum源码 touch /etc/yum.repos.d/nginx.repo nginx.repo文件内容如下： [nginx] name=nginx repo baseurl=http://nginx.org/packages/CentOS/releasever/releasever/releasever/basearch/ gpgcheck=0 enabled=1 2.执行安装 yu...

1.tar压缩 tar -zcvf xx.tar.gz xx 2.tar解压 tar -zxvf xx.tar.gz 3.tar太大进行分割，每个大小为15M split -b 15M -d -a 1 xx.tar.gz xx.tar.gz 4.分割还原 cat xx.tar,gz* > xx.tar.gz 5.直接解压分割tar cat xx.tar.gz*|tar -zxvf ...