Filter
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The remote printer name options used to invoke the different
filters are as follows:
1Pb
1Pa
Binary files (no filters)
ASCII files (carriage returns at line
ends)
1pbf
Binary file with form feed at file end
1paf
ASCII file with form feed at file end
All other remote printer name options will be treated the same
as lpb.
Note:
Some versions of lpr strip out all control characters and carriage
return characters from a file before it is sent, making it unsuitable for
bit-image files or font download files. In many cases the “4” option
may be used on the lpr command line to prevent this happening
(worth tying even if this option is not documented).
The following is an example of sending a text file, “txtfile,” via
lpr with a form feed appended:
lpr -Plpaf txtfile
5-8 Using UNIX