Windows type command works similarly to UNIX cat.
Example 1: Merge with file names (This will merge file1.csv & file2.csv to create concat.csv)
type file1.csv file2.csv concat.csv
Example 2: Merge files with pattern (This will merge all files with csv extension and create concat.csv)
type *.csv concat.csv
https://stackoverflow.com/questions/30466408/windows-batch-concatenate-multiple-text-files-into-one/30466645