Which command allows you to view a file's contents page by page?

The command that allows you to view a file's contents page by page is "less." This command is particularly useful for viewing long files because it gives users the ability to scroll forwards and backwards through the content. With "less," you can navigate using various keystrokes—such as using the arrow keys to move line by line or pressing 'space' to move by pages. It is designed to work efficiently with larger files, allowing for smooth navigation without loading the entire file into memory at once.

In contrast, while "more" also enables paging through a file's contents, it is somewhat limited compared to "less." For example, "more" only allows forward navigation and can limit the user's ability to scroll back, making "less" a more versatile option for file viewing. The "cat" command is used to display the contents of a file to the terminal but does not provide paging functionality, as it outputs the entire content at once. The "view" command is essentially a version of the "vi" editor that opens files in read-only mode, which is not primarily intended for simple paged output but more for editing files. Thus, "less" stands out as the best choice for viewing file contents page by page.