How can you use the command ls to find out about the size of file /etc/lilo.conf?.

What will be an ideal response?

With the option of `-, ls command can get file information in detail and the actual byte size of
the file can be obtained. Therefore, ls -l /etc/lilo.conf can get the actual file size.
And using the option `-s', ls -s /etc/lilo.conf will show the block size of the file
which is actually physical allocated size because a block is the atomic unit of the storage in Linux.