How to merge the pdf files into single pdf?

Question

I need to merge the two (or) three pdf files into a single pdf via scripting. I used the below code for inserting(merging) the pages.
this.insertPages({cPath: "Test.pdf"})
But its merginging(inserting) successfully. But the links not working after inserting. kindly advise me the solution or any other ways.
I am using Acrobat 8.0.
Thanks in advance..

Answer 1

http://gotofritz.net/blog/howto/joining-pdf-files-in-os-x-from-the-command-line/   <- this works but it strips OPI
Here's what I did: (This is shell script)
#!/bin/bash
FROM="./"
DESTINATION="./unCombined/"
for i in $(ls *_F_ga.pdf)
          do
          BACK=`echo "$i" | sed "s/_F_/_B_/g"`
          if [ -f $BACK ] ; then
                    open "$i"
                    osascript selectMenuItem.scpt
                    sleep 3
                    mv -f "$FROM/$i" $DESTINATION
                    mv -f "$FROM/$BACK" $DESTINATION
          fi
done
This calls an applescript
tell application "/Applications/Adobe Acrobat X Pro/Adobe Acrobat Pro.app"
activate
end tell
tell application "System Events"
          tell process "Acrobat"
                    click menu item "combine Front and Back" of menu "File" of menu bar 1
          end tell
end tell
Which activates a menu item (made with Java and saved into Macintosh\ HD/Users/*user*/Library/Application\ Support/Adobe/Acrobat/10.0/JavaScripts)
app.addMenuItem({
    cName: "combineFB",
    cUser: "combine Front and Back",
    cParent: "File",
    cExec: "combineFrontAndBack()",
    nPos: 0
Which activates this script (again saved into Macintosh\ HD/Users/*user*/Library/Application\ Support/Adobe/Acrobat/10.0/JavaScripts)
combineFrontAndBack = app.trustedFunction(
function(){
// get the file name and extension
var sFullFileName =  this.documentFileName
// make into an arry
var aFullFileName = sFullFileName.split('_F_');
// build a file name array dropping the extension
var aFileName = new Array(aFullFileName.length - 2);
for (i = 0; i < aFullFileName.length - 1; i++) {
aFileName[i] = aFullFileName[i];
// recreate file name
var sFileName = aFileName.join('.');
var back = sFileName + "_B_ga.pdf";
app.beginPriv(); // Explicitly raise privilege
//add back page based on front page name
this.insertPages ({
                    nPage: 0,
                    cPath: "/Macintosh HD/Users/jfox/test/" + back,
                    nStart: 0
this.saveAs("/Macintosh HD/Users/jfox/test/" + sFileName + "_ga.pdf");
this.closeDoc(true);
app.endPriv();
return true;
It's convoluted and comparitively slow, but it works.
EDIT: I just realized you probably meant document links and not OPI links. Ha ha. I have no Idea what this would do to document links.