First of all, to redirect a certain output of the command-line we have to use the symbol ">".
+Even in this case, we will use a file named "Hello", in which we want to move a certain output, like "Sun".
+$ echo Sun > Hello
+So if we copy the the file on our command-line, the output will be the following:
+$ cat Hello
+ Sun
If we want to move a certain output to an existing file, we just have to use twice the ">" symbol.
+$ echo Bright >> Hello
+$ cat Hello
+ Sun
+ Bright
To redirect an input from a file for a command, you have to use symbol "<".
+ In fact, it's not useful, as the result that obtain is just the content of the file.
Redirecting inputs becomes useful when it comes to chaining, so let's see it.
+