在Anaconda安装完成后，Linux输入清华大学镜像包，总是失败，代码如下，
linux中运行后的代码，提示错误找不到文件：
manager@bl8vbox[manager] channels: [11:50AM]
zsh: command not found: channels:
manager@bl8vbox[manager] – defaults [11:50AM]
zsh: command not found: defaults
manager@bl8vbox[manager] show_channel_urls: true [11:50AM]
zsh: command not found: show_channel_urls:
manager@bl8vbox[manager] default_channels: [11:50AM]
zsh: command not found: default_channels:
manager@bl8vbox[manager] – https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
zsh: no such file or dir