This directs the contents of all text files into a single merged.txt file.

Open the and navigate to your extracted folder using the cd command. Use the cat (concatenate) command: cat *.txt > merged.txt

Use the TEXTJOIN or CONCAT functions to merge strings from different cells.

If using PowerShell, type cmd and press to switch to the Command Prompt. Type the following command: copy *.txt merged.txt

If you only have a few files, you can use a standard text editor:

Open a new, blank document in (Windows) or TextEdit (Mac).

If the text files contain data like columns or lists, you can combine them in or Google Sheets :