Final answer:
To display the contents of a file one page at a time, the correct syntax is 'cat filename | more'. The 'cat' command is used to display a file's content and when piped to 'more', it paginates the output for easier reading.
Step-by-step explanation:
The command syntax to display the contents of a file one page at a time in a Unix-like operating system is by using the ‘cat’ command in conjunction with the ‘more’ utility. In this case, option 2, ‘cat’, is the correct command, although it is incomplete without the pipe to ‘more’. The correct form would be ‘cat filename | more’. This command will consecutively display the file’s content one screen at a time, and you can press the spacebar to advance one page or the Enter key to advance one line at a time.
Options 1 and 3 are incorrect because ‘man’ is used to display manual pages, not a regular file's content, and ‘at’ is a command for scheduling tasks, not for displaying file content. Option 4, ‘cannot be fixed,’ is not applicable as the action described is possible with the correct syntax.