Exam 13: Unix Operating System

If a program's execution is expected to take a long time, you can start its execution and then log off the system without having to wait for it to finish by using the command ____.

The maximum number of bytes that can be allocated to a single file in UNIX is ____.

In UNIX the process table is set up when the process is created and is deleted when the process terminates.

The exec family of commands-execl, execv, execls, execlp and execvp-is used to start execution of a new program from another program.

For multiprogramming systems, most UNIX operating systems use either ____ management techniques.

The C shell is usually available as an unbundled product.

While Linux and UNIX are different operating systems, they strongly resemble each other in many ways.

The command ____ is used to lower the priority of a process.

UNIX can be mastered by novice programmers in a matter of weeks.

A ____ is several programs simultaneously processing the same I/O stream.

____ is a family of IEEE standards that define a portable operating system interface to enhance the portability of programs from one operating system to another.

The UNIX file management system organizes the disk into blocks of 512 bytes each and divides the disk into four basic regions, the first of which is ____.

The second column in a directory listing indicates the number of links, also known as the number of aliases, that refer to the same physical file.

A disadvantage of Linux and UNIX is ____.

The immediate goals for UNIX were twofold, to develop an operating system that would support software development, and to keep its algorithms as simple as possible.

UNIX Version 4 was hardware independent.

The UNIX file management system organizes the disk into blocks of 1024 bytes each and divides the disk into four basic regions.

The UNIX kernel does not reside in memory permanently, it can be swapped out when needed to provide more space for applications.

UNIX has grown to become one of the most widely used operating systems in history.

the first official version of UNIX introduced was in ____.