postreverse - reverse the page order in a PostScript file


postreverse [-o list] [-r] [file]



The postreverse filter reverses the page order in files that conform to
Adobe's Version 1.0 or Version 2.0 file structuring conventions, and
writes the results on the standard output. Only one input file is allowed
and if no file is specified, the standard input is read.

The postreverse filter can handle a limited class of files that violate
page independence, provided all global definitions are bracketed by
%%BeginGlobal and %%EndGlobal comments. In addition, files that mark the
end of each page with %%EndPage: label ordinal comments will also reverse
properly, provided the prologue and trailer sections can be located. If
postreverse fails to find an %%EndProlog or %%EndSetup comment, the
entire file is copied, unmodified, to the standard output.

Because global definitions are extracted from individual pages and put in
the prologue, the output file can be minimally conforming, even if the
input file was not.


-o list
Select pages whose numbers are given in the comma-separated
list. The list contains single numbers N and ranges N1 - N2. A
missing N1 means the lowest numbered page, a missing N2 means
the highest. The page range is an expression of logical pages
rather than physical sheets of paper. For example, if you are
printing two logical pages to a sheet, and you specified a
range of 4, then two sheets of paper would print, containing
four page layouts. If you specified a page range of 3-4, when
requesting two logical pages to a sheet; then only page 3 and
page 4 layouts would print, and they would appear on one
physical sheet of paper.

Do not reverse the pages in file.


Example 1: Examples of postreverse.

o select pages 1 to 100 from file and reverse the pages:

example% postreverse -o1-100 file

To print four logical pages on each physical page and reverse all the

example% postprint -n4 file | postreverse

To produce a minimally conforming file from output generated by dpost
without reversing the pages:

example% dpost file | postreverse -r


The following exit values are returned:

Successful completion.

An error occurred.


download(1), dpost(1), postio(1), postprint(1), attributes(7)


No attempt has been made to deal with redefinitions of global variables
or procedures. If standard input is used, the input file will be read
three times before being reversed.

May 13, 2017 POSTREVERSE(1)