To find a exisiting package on your CentOS system, just type this command
# rpm -ql "package_name"
For instance, to download the youtube videos, we need the youtube package - "youtube -dl"
# rpm -ql youtube-dl
So, you will see a list of files within that package, and that makes sure the presence of that package on your system.
If the package is not installed, the terminal will display
" package youtube-dl is not installed "
That's all
Live Linux...!!!
+CentOS
