POSTREVERSE(1) User Commands POSTREVERSE(1)

NAME

postreverse - reverse the page order in a PostScript file

SYNOPSIS

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


/usr/lib/lp/postscript/postreverse

DESCRIPTION

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.

OPTIONS

-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.


-r
Do not reverse the pages in file.

EXAMPLES

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
pages:


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

EXIT STATUS

The following exit values are returned:

0
Successful completion.


non-zero
An error occurred.

SEE ALSO

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

NOTES

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)