Off topic:How to use command line arguments in bash?

Question

[A_heath]

Hi all,

As I'm relatively new to bash scripts, I would need some help if you don't mind, please.

I've written a bash script and it is working perfectly on test files. Now, I would like to use command line arguments so I can use this bash script on any other files I want.

For example, I have this line in my script with a test file:

cut -f 1 TEST_FILE.txt > headers.txt

I would like to be able to do something like this in my Linux terminal:

bash script.sh -i input_any_file.txt

And in my script:

cut -f 1 any_file.txt > headers.txt

So how can I use an input file in an argument and "call" this file on the script? If you have any suggestions, I would be happy to hear them ...

Thank you in advance!