joining multiple PDFs into one

[Russ]

The command is cat. It is the operator > or >> which controls whether or not existing data is preserved. Thats why he could only see the last page when he used > 
Each new page overwrote the previous one.

Andrej Marjan <andrej at marjan.ca> wrote:

>On Tue, Nov 15, 2011 at 11:10 AM, Russ <rreiter91 at gmail.com> wrote:
>
>> Actually the original poster used > which overwites existing data, >>
>> appends new data to the old. I'm surprised that having multiple pdf headers
>> in the body of the document doesn't cause some confusion, but perhaps
>> modern parsing software can deal with this.
>>
>
>From the cat(1) manpage:
>
>-------------------------------------------------------
>SYNOPSIS
>       cat [OPTION]... [FILE]...
>
>DESCRIPTION
>       Concatenate FILE(s), or standard input, to standard output.
>-------------------------------------------------------
>
>The two commandlines are equivalent.