-bash: dnf: 未找到命令

-bash: dnf: 未找到命令通常表示在当前系统中没有安装dnf命令。要解决这个问题，你可以使用以下方法之一：
1. 确保你已经按照正确的步骤安装了dnf命令。根据引用中提到的方法，在CentOS上安装dnf命令可以使用以下命令：sudo yum install dnf。安装完成后，你可以使用dnf -version命令来验证安装是否成功。中的描述，你可以使用以下命令下载并安装dnf命令的软件包：
wget http://springdale.math.ias.edu/data/puias/unsupported/7/x86_64/dnf-conf-0.6.4-2.sdl7.noarch.rpm
wget http://springdale.math.ias.edu/data/puias/unsupported/7/x86_64//dnf-0.6.4-2.sdl7.noarch.rpm
wget http://springdale.math.ias.edu/data/puias/unsupported/7/x86_64/python-dnf-0.6.4-2.sdl7.noarch.rpm
sudo yum install python-dnf-0.6.4-2.sdl7.noarch.rpm dnf-0.6.4-2.sdl7.noarch.rpm dnf-conf-0.6.4-2.sdl7.noarch.rpm
安装完成后，再次尝试使用dnf命令查看结果。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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