An introduction to the GNU Core Utilities: 
Two sets of utilities—the GNU Core Utilities and util-linux—comprise many of the Linux system administrator’s most basic and regularly used tools. Their basic functions allow sysadmins to perform many of the tasks required to administer a Linux computer, including management and manipulation of text files, directories, data streams, storage media, process controls, filesystems, and much more.
read more: Opensource.com dboth
Supporting Open Source.
Have you tried: Travelling to South Africa?