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

find . -name "*file.txt" | xargs cat > full_set.txt

Answer 2

You can loop over each file and do a check to see if the last line ends in a new line, outputting one if it doesn't.

for file in *file.txt; do
    cat "$file"
    [[ $(tail -c 1 "$file") == "" ]] || echo
done > full_set.txt

Answer 3

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.

Answer 4

this works for me:

for file in $(ls *file.txt) ; do cat $file ; echo ; done > full_set.txt

I hope this will help you.

Answer 5

Many tools will add newlines if they are missing. Try e.g.

sed '' *file.txt >full_set.txt

but this depends on your sed version. Others to try include Awk, grep -ho '.*' file*.txt and etc.

Answer 6

Try:

awk 1 *file.txt > full_set.txt

This is less efficient than a bare cat but will add an extra \n if missing at the end of each file