On Wednesday 03 Sep 2003 11:19 pm, James Sparenberg wrote: > On Wed, 2003-09-03 at 15:07, Vox wrote: > > On September 1993 plus 3654 days Ronald J. Hall wrote: > > > On Tuesday 02 September 2003 11:15 pm, Mark wrote: > > >> I had thought about that. but then I decided not to do it that > > >> way cause I'd end up having to edit and clean up too much. So I > > >> chose the try the elegant lazy method. as it turns out when I > > >> used "cat" do combine the files all I got was the first page and > > >> a wee bit of the last page and that was all. don't know what I > > >> did wrong. > > > > > > Mark, someone else mentioned that they did not think it would > > > work because it was a binary format. That could be it. Otherwise > > > the "cat" command would have worked. > > > > I've actually used cat to concatenate binary files (.mpg) > > together...strict standards compliant viewers choke on them, but > > mplayer plays files created this way without much of a problem. > > The real problem isn't that the file is a binary, but that the > > reader of the file doesn't like headers-in-the-middle-of-a-file. > > > > Vox > > I think (but I can't swear) that the problem is file headers. The > PDF has a header that gives data like length etc. So when you cat > them together the first header is wrong. The second is in the middle > etc. I agree that the only way is to cvt to ps then merge then > convert back to pdf. > > James
Probably, but not the only possible answer. Consider HTML. A file is defined to be: <HTML> blah blah </HTML> If you cat two pages together you get: <HTML> blah blah </HTML> <HTML> blah blah </HTML> and that is not valid HTML. It's possible to build a browser that can read it, but a browser would not be expected to. -- Richard Urwin
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