How to copy the content of an aux file to another aux file?

Question

I have two aux files attached to my LaTeX document : aux_1 and aux_2. I would like, at some point, to copy the content of aux_1 to aux_2.

More precisely, the file aux_1 does already contain some text. I want to copy the content of aux_2 after the already existing text.

Is it possible to do it ? I use the newfile package to deal with the aux files.

PS : If possible, I would like a LaTeX-friendly answer :)

Ryan Reich · Accepted Answer · 2011-10-14 00:29:37Z

3

\write18{cp aux_1 aux_2}

(On Windows, use copy instead, I think.)

answered Oct 14, 2011 at 0:29

Ryan Reich

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2

\immediate\write18 if the command needs to be performed at a precise moment; without \immediate it will be deferred to the next shipout operation (that might never happen).
– egreg
Oct 14, 2011 at 9:29
@egreg: Good advice, though that makes my answer more serious than I intended it. I'm just pushing my "why do that in LaTeX when you have a perfectly good OS instead" angle on excessive TeX programming.
– Ryan Reich
Oct 14, 2011 at 14:45
1

I suspect that your proposition will overwrite aux_1 to aux_2.
– Colas
Oct 18, 2011 at 15:56
1

@Colas: Yes, it will. You can use a different operating system utility that will append them, e.g. cat, if you want that. As I said, my point is that this is not a TeX task and the solution is to use \write18 to farm it out to the system.
– Ryan Reich
Oct 18, 2011 at 16:38
Thanks ! I understand that I do strange things, sorry about that :)
– Colas
Oct 18, 2011 at 16:41

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