Which option can be used with tail to print the last X bytes of a file to the screen?

Using the option -c with the tail command allows you to print the last X bytes of a file to the screen. The tail command is commonly used to display the end of files and provides various options for customizing output.

When the -c option is specified, it tells tail to interpret the number provided as a byte count rather than as a line count. For example, if you would like to see the last 100 bytes of a specific file, you would use the command tail -c 100 filename. This is particularly useful when dealing with binary files or when the specific size in bytes is needed rather than the number of lines.

The other options provided in the question serve different purposes. The -n option is used to specify the number of lines to show, not bytes. The -b option is not typically associated with the tail command and might cause confusion; it is instead used with some other related commands. The -x option is not a standard option for tail at all, and thus does not apply to this context. This clarity helps reinforce why -c is indeed the correct choice for printing the last X bytes.