How to make cat start a new line

Question

I have four files:

one_file.txt

abc | def

two_file.txt

ghi | jkl

three_file.txt

m         


        

Answer 1

You can use one line for loop for this. The following line:

for f in *_file.txt; do (cat "${f}") >> full_set.txt; done

Yields the desired output:

$ cat full_set.txt 
abc | def
mno | pqr
ghi | jkl

Also, possible duplicate.