How to make macOS terminal execute multiple commands in sequence?

Question

bash

There are several ready-made commands in a text file, how to run them sequentially through the Terminal?

Answer 1

1. Sequentially paste and execute them in the terminal :-)
2. Add the line #!/bin/bash at the beginning of the file, rename the file with the .sh extension, make the file executable chmod +x myfile.sh, run it.