To install .list file using pkmgr:
sudo pkmgr curl https://github.com/pkmgr/centos/raw/main/lists/default.list
To install .sh script using pkmgr
sudo pkmgr script https://github.com/pkmgr/centos/raw/main/scripts/default.sh
use the following format to manual install:
sudo yum install -y $(cat saved-file.txt )