Stephen Bourne at AT&T Bell Labs developed the ____ shell as the first UNIX command processor.

You can use ____ to search backward in Emacs.

____ operators compare the relationship between two values or arguments.

The ____ option of the find command displays files that have been changed within the last n minutes.

The ____ command enables you to initialize the terminal display or terminal window, to place text and prompts in desired locations, and to respond to what the user selects from the menu.

When using the printf function, ____ indicates that the output is to appear in decimal digits.

In shell scripts, comment lines begin with a(n) ____.

A program’s high-level language statements are stored in a file called the ____ file.

____ are typically not compiled into machine code prior to running, but are executed through an interpreter.

____ variables are used to store information about the setup of the operating system, and after they are set up, you typically do not change them.