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moby/docs/sources/terms/filesystem.md
O.S.Tezer c932667cd2 Docs auto-conversion fixes and MD marking and structure improvements. 
- Remove redundant chars and all errors caused by RST->MD conversion.
   e.g. [/#, /\, \<, />, etc.]
 - Fix broken inter-document links
 - Fix outbound links no-longer active or changed
 - Fix lists
 - Fix code blocks
 - Correct apostrophes
 - Replace redundant inline note marks for code with code marks
 - Fix broken image links
 - Remove non-functional title links
 - Correct broken cross-docs links
 - Improve readability

Note: This PR does not try to fix/amend:

 - Grammatical errors
 - Lexical errors
 - Linguistic-logic errors etc.

It just aims to fix main structural or conversion errors to serve as
a base for further amendments that will cover others including but
not limited to those mentioned above.

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)

Update:

 - Fix backtick issues

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
2014-04-24 22:19:32 +10:00

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page_title: File Systems page_description: How Linux organizes its persistent storage page_keywords: containers, files, linux

File System

Introduction

In order for a Linux system to run, it typically needs two file systems:

  1. boot file system (bootfs)
  2. root file system (rootfs)

The boot file system contains the bootloader and the kernel. The user never makes any changes to the boot file system. In fact, soon after the boot process is complete, the entire kernel is in memory, and the boot file system is unmounted to free up the RAM associated with the initrd disk image.

The root file system includes the typical directory structure we associate with Unix-like operating systems: /dev, /proc, /bin, /etc, /lib, /usr, and /tmp plus all the configuration files, binaries and libraries required to run user applications (like bash, ls, and so forth).

While there can be important kernel differences between different Linux distributions, the contents and organization of the root file system are usually what make your software packages dependent on one distribution versus another. Docker can help solve this problem by running multiple distributions at the same time.