ARCHITECTURE OF UNIX
The architecture of UNIX can be divided into three levels of functionality, as shown in Figure . The lowest level is the kernel , which schedules tasks , manages resources, and controls security. The next level is the shell, which acts as the user interface, interpreting user commands and starting applications. The highest level is utilities, which provides utility functions. In other words it is the USER level, as user is the one who operates those utilities.
The architecture of UNIX can be divided into three levels of functionality, as shown in Figure . The lowest level is the kernel , which schedules tasks , manages resources, and controls security. The next level is the shell, which acts as the user interface, interpreting user commands and starting applications. The highest level is utilities, which provides utility functions. In other words it is the USER level, as user is the one who operates those utilities.
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