in reply to Single line insert to the start of a file
Assuming a *nix system, and the existence of a real-world problem to be solved rather than a homework problem in a particular language:
head -1 file1 >/tmp/file.$$; cat file2 >>/tmp/file.$$; mv /tmp/file.$$ file2Aaron B.
Available for small or large Perl jobs; see my home node.
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