Sed Insert file between tags

Shell Programming and Scripting
1

Hi,

I have a file which has the following tags in it:

 
####STARTTAG######
 
(Then 40 lines of whitespace)
 
 
 
####ENDTAG########

What I would like to do (using sed) is to insert a another (variable length) file between these two tags.....

I have read examples and manuals unil i'm blue in the face but I can't find a solution to this fairly simple situation....

Please help!

Thanks

---------- Post updated at 11:33 AM ---------- Previous update was at 10:59 AM ----------

I found a solution:

 
sed '/STARTTAG/r "file to insert"' < "tagfile" >"tagfile.mod"
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