# Unix Shell

## Manuals you'd need

### Testing

If you want to test a string, value or a path, you can use `[`

E.g.

`[ 1 = 1 ]` will return 0, which means true

### Getting Values from CLI

Usually, `$#` means number of arguments, while `$1`, `$2` ... returns the argument.

Special cases:

1. `$@` returns all arguments
2. `$0` returns the program itself

> Pro tip: there are multiple ways to do this :)