All you need is really a one liner 

perl -pi -e 's/line2/changed_line2/'

[download]

see perldoc -q insert for more examples and the equivalent expanded code. see also the note on one liners in windows if you are in windows

HTH

-T

use perl; use strict;

In reply to Re: Modifying lines of text by thens
in thread Modifying lines of text by Anonymous Monk

Title:
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