© David Both 2018
David BothThe Linux Philosophy for SysAdminshttps://doi.org/10.1007/978-1-4842-3730-4_5

5. Everything Is a File

David Both1 
Raleigh, North Carolina, USA
This is one of the most important concepts that makes Linux especially flexible and powerful: Everything is a file. That is, everything can be the source of a data stream, the target of a data stream, or in many cases both. In this chapter you will explore what “everything is a file” really means and learn to use that to your advantage as a SysAdmin.

The whole point with “everything is a file” is … the fact that you can use common tools to operate on different things.

—Linus Torvalds in an email

What Is a File?

Here is a trick question for you. Which of the following are files? ...

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