给CentOS添加IUS的yum源,最新的源能够在网页https://ius.io/GettingStarted中找到centos
自动安装bash
curl -L https://setup.ius.io | sh
手动安装curl
$ wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm $ wget https://centos7.iuscommunity.org/ius-release.rpm