You can prevent the output of ls from scrolling by
too quickly by piping the output to a pager,
such as less or more. The
results are akin to the DOS command dir
somedirectory /p, because you'll
see the output one screen, or "page" at at time.
To read the output of /etc with
less, for example, at the shell prompt, type:
To move forward a screen, press Space; to move back a
screen, press the B key; to quit, press
Q.
You can achieve the same results with more, another
pager.
You can also print the directory by piping the output to a printer
in the same way that you piped the output to your screen. Assuming
you've configured a printer, to pipe the output type: