Introduction - If you have any usage issues, please Google them yourself
UNIX operating system, AT & T, the United States in 1971, running on the PDP-11 operating system. With a multi-user, multi-tasking features, support multiple processor architectures, the first by Ken Thompson (Kenneth Lane Thompson), Dennis Ritchie (Dennis MacAlistair Ritchie), and Douglas McIlroy in 1969 at the AT & T' s Bell experiment chamber development. This is the LINUX Beihang course courseware.