I am trying to use the following code:

Code:

cat *.txt > OutPutFile.txt

Using files with a expression in one single line that always end with " ; " something like this:
Block1.txt
Block2.txt
Block3.txt
The expected result should be something like this:
OutPutFile.txt:
My code works OK in this very small example but when I use it with my actual files (I have uploaded 3 files named block1.txt, block2.txt and block3.txt) containing very long, one-line expressions, the code does not produce the expected result (I am also uploading my outputfile). The problem is that when the expressions in the input files are too long, the code does not place them in individual lines. Instead, it generates a extremely long, single-line expression which I cannot use afterwards. I need to make sure that each expression is placed in an individual line one after another following the input file number order. Thus, the expression in block 1 should be the first one followed by block2 so on and so forth.
Any help will be greatly appreciate it!