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5. Testing the example

Let's see the usage of the program:
```
./sys_info.sh -h
```
```
./sys_info.sh --help
```
We see that we can also call it without any parameters. Let's try it:

./sys_info.sh

./sys_info.sh > report1.html

lynx report1.html

Exit with qy

We can write the output to a file using the option -f or --file:

./sys_info.sh -f report2.html

cat report2.html

./sys_info.sh --file report3.html

Let's also try the interactive method:
```
./sys_info.sh -i
```
- Enter the name of the output file as report1.html
- Press n for not overwriting the existing file.
- Enter the new name of the output file as report2.html
- Press y for overwriting the existing file.
```
./sys_info.sh --interactive
```
- Enter the name of the output file as report3.html
- Press n for not overwriting the existing file.
- Enter the new name of the output file as report4.html
```
lynx report4.html
```
Exit with qy

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