UNIX for Dummies Questions & Answers

Alright, so I was looking around a bit on the forum before posting and still don't really understand so I figured I'd post my own question.

I am appending two files using

Code:

cat file_1.txt >> file_2.txt

The problem is that I need a blank line in between the two different text files and it does not do that. How can I add the blank line so it looks like the example below?

file_1.txt has the contents:
line 1 from file_1.txt
line 2 from file_1.txt
line 3 from file_1.txt

file_2.txt has the contents:
line 1 from file_2.txt
line 2 from file_2.txt
line 3 from file_2.txt

and after cat file_1.txt >> file_2.txt I want the output to look like this:
line 1 from file_1.txt
line 2 from file_1.txt
line 3 from file_1.txt

line 1 from file_2.txt
line 2 from file_2.txt
line 3 from file_2.txt

I'm thinking after looking around that it will be some sort of sed command.

Thanks!

Code:

echo >> file_2.txt; cat file_1.txt >> file_2.txt

Brilliant! That worked, thanks.