Try this 
while (<DATA>) {
$var=$_;
$var=~s/(.{10})/$1\\n/;
print "$var";
}

__DATA__
dgbjhdghjdfgjhd
dfgjdjfghjkdhgdfg
dgbhgdfjgjhgdfgdfg
ghgjgglhkdjghkdhgk

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In reply to Re^2: how to Insert a newline character in a sentence by Selvakumar
in thread how to Insert a newline character in a sentence by Anonymous Monk

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