Computer operating system. A multi-user computer environment designed to provide access to a range of computer applications, tools, and utilities to the users of the system. Chart includes detailed information on:
-- logging in/out -- UNIX shells & command line -- the UNIX file system -- redirection -- access permissions -- wildcards, printing and environmental variables -- finding files & directories -- electronic mail -- archiving files & directories -- remote connections -- job control -- File Transfer Protocol (FTP) -- editors -- command summary -- login & logout shells and scripts