How to download a software with dependencies

I had to install a software on a server without internet access. The solution is to download all dependencies needed to a folder and create a repo.

yum install --downloadonly --downloaddir=<directory> <package>

For example:

yum install --downloadonly --downloaddir=/opt/mysoftware emacs

If needed, custom repository could be created. Use createrepo tool for this.

cd /opt/mysoftware
createrepo .