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Development Tools Console Foundations Environment and Redirection Pipes and Redirection

Posted by A X
A X
12,842 Points

What is the point of modifying standard in and standard out to something else?

Referenced video: https://teamtreehouse.com/library/console-foundations/environment-and-redirection/pipes-and-redirection

I wasn't seeing the usefulness in modifying standard in and standard out. Especially how does one recover the standard in if you modify the standard in to not use the keyboard?

I didn't understand what any of Jim's examples were actually doing in terms of usefulness. Like why would we want to append an input text document to an output text document?

1 Answer

Steven Parker
Steven Parker
230,995 Points
Steven Parker
Steven Parker
230,995 Points

:point_right: Redirection is usually only effective for one command.

So if you redirect the input of a command to be a file, only that command is affected. Your shell (the command prompt) will still take the next input from the console.

And one example of where you might append one document onto another is if you were preparing a master document from several individual chapters or section documents.