首先展示成品

首先是neofetch：

debian/Ubuntu：

sudo apt-get install neofetch

alpine:apk add neofetch

centOS:

sudo yum install epel-release

            curl -o /etc/yum.repos.d/konimex-neofetch-epel-7.repo https://copr.fedorainfracloud.org/coprs/konimex/neofetch/repo/epel-7/konimex-neofetch-epel-7.repo

            sudo yum install neofetch

windows:

还没成功（

其次是screenfetch：

debian/Ubuntu：

sudo apt-get install screenfetch

alpine：

sudo apk add screenfetch

centOS：

sudo yum install epel-release

            curl -o /etc/yum.repos.d/konimex-neofetch-epel-7.repo https://copr.fedorainfracloud.org/coprs/konimex/neofetch/repo/epel-7/konimex-neofetch-epel-7.repo

            sudo yum install screenfetch

windows：

Install-Module -Name windows-screenfetch

                Set-ExecutionPolicy -ExecutionPolicy Unrestricted

                Import-Module windows-screenfetch

安装完毕后输入软件包名即可。