I need to concatenate some relatively large text files, and would prefer to do this via the command line. Unfortunately I only have Windows, and cannot install new software.
I use this, and it works well for me:
TYPE \\Server\Share\Folder\*.csv >> C:\Folder\ConcatenatedFile.csv
Of course, before every run, you have to DELETE C:\Folder\ConcatenatedFile.csv
DELETE C:\Folder\ConcatenatedFile.csv
The only issue is that if all files have headers, then it will be repeated in all files.