Listing 2. Using pr

# (18) Present 2 files side by side in separate
#  columns - don't bother including the
#  default header and trailer.
$ pr -m -t  README1 README2
This is the       This is the 
1st file.         2nd file.

# (19) list files/directories 
#      in exactly 2 columns - no headers/trailers
#      and double space each line ...
$ ls -a | pr -t -a -c2 -d
Desktop                             bin

junk                                rje

tmp                                 .profile

# (20) send formatted output to the printer  -
#      override the default header.
pr -h'Installation Instructions' README.txt | lpr