## ascii-art-output
### Objectives
- You must follow the same [instructions ](../README.md ) as in the first subject **while** writing the result into a file.
The file must be named by using the flag `--output=<fileName.txt>` , in which `--output` is the flag and `<fileName.txt>` is the file name which will contain the output.
- The flag must have exactly the same format as above, any other formats must return the following usage message:
```console
Usage: go run . [STRING] [BANNER] [OPTION]
EX: go run . something standard --output=< fileName.txt >
```
If there are other `ascii-art` optional projects implemented, the program should accept other correctly formatted `[OPTION]` and/or `[BANNER]` .
Additionally, the program must still be able to run with a single `[STRING]` argument.
### Instructions
- Your project must be written in **Go** .
- The code must respect the [**good practices** ](../../good-practices/README.md ).
- It is recommended to have **test files** for [unit testing ](https://go.dev/doc/tutorial/add-a-test ).
### Usage
```console
$ go run . "hello" standard --output=banner.txt
$ cat -e banner.txt
_ _ _ $
| | | | | | $
| |__ ___ | | | | ___ $
| _ \ / _ \ | | | | / _ \ $
| | | | | __ / | | | | | (_) | $
|_| |_| \___| |_| |_| \___/ $
$
$
$
$ go run . "Hello There!" shadow --output=banner.txt
$ cat -e banner.txt
$
_| _| _ | _| _ |_|_|_|_| _| _ | $
_| _| _ |_| _| _ | _|_ | _| _ |_|_| _|_ | _| _ |_| _|_ | _| $
_|_|_|_| _|_ |_|_| _| _ | _| _ | _| _ | _| _ |_|_|_| _|_ | _|_ |_|_| _| $
_| _| _ | _| _ | _| _ | _| _ | _| _ | _| _ | $
_| _| _ |_|_| _| _ | _|_ | _| _ | _| _ |_|_| _| _ |_|_| _| $
$
$
$
```
### Allowed packages
- Only the [standard Go ](https://golang.org/pkg/ ) packages are allowed
This project will help you learn about :
- The Go file system(**fs**) API
- Data manipulation
