Debian下载步骤：
$ sudo apt-get install --download-only
or
$ sudo apt install apt-rdepends
$ apt download $(apt-rdepends vim | grep -v "^ ")
This command will recursively download all required packages.
Just in case if you encountered with an error like below:
E: Can't select candidate version from package debconf-2.0 as it has no candidate
Try this command instead:
$ apt-get download $(apt-rdepends vim | grep -v "^ " | sed 's/debconf-2.0/debconf/g')
Centos下载步骤：
1. Download RPM packages with all dependencies using "Downloadonly" plugin
We can easily download any RPM package with all dependencies using "Downloadonly" plugin for yum command.
To install Downloadonly plugin, run the following command as root user.
# yum install yum-plugin-downloadonly
Now, run the following command to download a RPM package.