more filename...
This command displays the file(s) named on the standard output, but one screenful at a time. At the end of a screenful, the percentage of the file already shown is displayed. Pressing the space bar displays the next screenful, while pressing the carriage return key moves forward only one line. A number followed by a carriage return displays this additional number of lines.
If more than one file is specified, a heading preceding each file is displayed, to identify the file that will follow:
prompt> more file1 file2
::::::::::::::
file1
::::::::::::::
this is the first line in file1
this is the second line in the file
::::::::::::::
file2
::::::::::::::
this is the beginning of file2
more lines here...
end of file2
To go back one screen, the ``b" command is used. To stop (quit), press ``q".
An alternative command to more is page. Their usage is identical.