Create a File With `cat` (opens in new tab)

When you combine cat (concatenate) with > (output redirection), you can create and write to a file from the command line. $ cat > test.txt Hit enter after the file name, and your terminal will wait for input. End the file with CTRL + D. $ cat > test.txt one two three $ cat test.txt one two three >> works, too; appending to the file as expected.