# yum -y install yum-utils

# yum info yum-utils

#  mkdir  downloadonlyDir

# yum  -y  install  --downloadonly  --downloaddir=/path/to//downloadonlyDir    X

# mkdir  yumdownloaderDestdir  

#  yumdownloader  --resolve   --destdir=/path/to/yumdownloaderDestdir     X

yumdownloader --resolve will only download the missing dependencies. 

You can use an empty installroot to download the package along with all its dependencies.

# yum  -y  install  X  \

  --installroot=</path/to/tmp_dir>  \

  --downloadonly  --downloaddir </path/to/rpm_dir>    \

   --releasever=/    

#  yumdownloader  X  --resolve   --destdir=/path/to/yumdownloaderDestdir   --installroot=/path/to/installroot   --releasever=/

repotrack is a program for keeping track of a particular package and its dependencies.

 It will download one or more packages and all dependencies.

# mkdir  repotrackDir

# repotrack  X   -p    /path/to/repotrackDir

默认下载适配当前架构的主要及其依赖包

How To Download A RPM Package With All Dependencies In CentOS？

https://www.ostechnix.com/download-rpm-package-dependencies-centos

https://www.linuxtechi.com/download-rpm-using-yumdownloader-centos-7-rhel-7

yumdownloader(1) - Linux man page

https://linux.die.net/man/1/yumdownloader

yumdownloader doesn't resolve dependency?

https://serverfault.com/questions/911932/yumdownloader-doesnt-resolve-dependency

https://bugzilla.redhat.com/show_bug.cgi?id=1152326

How to use ( yumdownloader --resolve <package name> ) on ( yum -y groupinstall “Desktop” “Desktop Platform” “X Window System” “Fonts” )?

https://unix.stackexchange.com/questions/89315/how-to-use-yumdownloader-resolve-package-name-on-yum-y-groupinstall

Download Packages With Dependencies Locally In Ubuntu

https://www.ostechnix.com/download-packages-dependencies-locally-ubuntu

How to Download Packages Using Yum/DNF without Installing on Linux

https://linoxide.com/linux-how-to/download-packages-without-installing-rpm-distros

How to create local repo for push agent feature using repotrack？

yumdownloader vs repotrack

https://serverfault.com/questions/470964/yumdownloader-vs-repotrack

Download all dependencies with yumdownloader, even if already installed?

https://unix.stackexchange.com/questions/50642/download-all-dependencies-with-yumdownloader-even-if-already-installed

http://man7.org/linux/man-pages/man1/repotrack.1.html

http://manpages.ubuntu.com/manpages/bionic/man1/repotrack.1.html