Combine multiple text files into one file

To have empty lines betwen files:

cat file1 newline file2 newline file3 > newfile

Where 'newline' is file with empty line.

You can use the AWK utility:

awk 'FNR==1{print ""}{print}' *files > newfile

Source: https://stackoverflow.com/questions/1653063/how-do-i-include-a-blank-line-between-files-im-concatenating-with-cat