To install xbase-clients just follow these instructions.
sudo apt-get install xbase-clients
Which will install xbase-clients and any other packages on which it depends.
|Maintainer||Debian X Strike Force <firstname.lastname@example.org>|
|Description||miscellaneous X clients - metapackage the X libraries), and thus with some input and output hardware like a graphics card, monitor, keyboard, and pointing device (such as a mouse).|