Well, you can install it if you want to. The thing is that those two packages are essentially rewrites of the original. ArchLinux does a good job of explaining.
That said, I prefer
find. For example, if I wanted to find all files with “lubuntu” in the name in a case insensitive manner:
sudo find / -type f -iname *lubuntu* 2>/dev/null
The reason for the
sudo is to allow access to all files. Even then, there are some that will produce errors, thus the reason to ignore errors with
Neither of those is necessary if you’re working with directories that you don’t need to elevate permissions to. For example, if you want to see if you have any ISOs in your Downloads folder:
find ~/Downloads -type f -iname *.iso
You can even use
find to perform actions on all the files it finds. It’s pretty powerful stuff.