Concatenating multiple text files into a single file in Bash

Question

What is the quickest and most pragmatic way to combine all *.txt file in a directory into one large text file?

Currently I\'m using windows with cygwin so I have acc

Answer 1

The most upvoted answers will fail if the file list is too long.

A more portable solution would be using fd

fd -e txt -d 1 -X awk 1 > combined.txt

-d 1 limits the search to the current directory. If you omit this option then it will recursively find all .txt files from the current directory.
-X (otherwise known as --exec-batch) executes a command (awk 1 in this case) for all the search results at once.