BAT file to read and copy bottom 16 lines from a text file to another one?

Question

I need to copy the bottom 16 lines from a text file to another text file. I need to do this procedure for all clients. At the client\'s location the text file will be common

Answer 1

The more command can be used to extract the last n lines:

1. If a file, someFile.txt, contains 2000 lines then the last 16 lines can be extracted with ("/E +n: Start displaying the first file at line n"):

   more /e +1984 someFile.txt > lastLines.txt
   

2. The number of lines in someFile.txt can found as:

   for /f %%i in ('find /v /c "" ^< someFile.txt') do set /a lines=%%i
   

3. The call of more then becomes (still for this example, the last 16 lines):

   set /a startLine=%lines% - 16
   more /e +%startLine% someFile.txt > lastLines.txt