A Filesystem's Guide

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''Note : The following is far from being complete''
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{{Improve}}
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{{Languages|A Filesystem's Guide}}
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== UNIX filesystems organisation background ==
  
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The main ideas to organize the files in the standard Unix filesystem are:
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* group files according to their life cycle.
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* visibility (convenience and access control).
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* historical constraints.
  
= The Filesystem =
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Therefore:
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* User data that should survive at all costs go to /home
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* Configuration files are precious and must be easy to reach, they go in /etc
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* Things that should not survive reboot go to /tmp
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* Things that physically come and go appear in /mnt (old style) or /media (new style)
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* Files that tend to grow too much unsupervised go to /var, so that they can only fill the partition containing this directory.
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* Pseudo files used to communicate with the kernel go to /proc (old style) or /sys (new style). Pseudo files used to communicate with other hardware devices go to /dev.
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* /boot can be used to keep the kernel file in a place the hardware can access easily
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* The remaining directories contain binaries. /lib is for shared libraries. The basic low-level UNIX toolbox is in /bin, the tools needed only by the administrator are in /sbin. Everything else go to /usr.
  
== [[Openmoko2007.2]] ==
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== The Om 2008.8 filesystem ==
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The root filesystem consists the following directories:
  
The Rootfilesystem consists out of the following directories:
 
 
*bin     
 
*bin     
 
*dev
 
*dev
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The first difference to the standard linux filesystem is that Openmoko lacks a /root directory.
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The first difference to the standard Linux filesystem is the lack of /root directory. This directory is located under '''/home/root/'''.
This directory is located under /home/root/
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The config and data files for contacts, calendar, memos and tasks are located under the ~/Applications and ~/Documents folders, cf. the [[Backup]] article.
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The file '''/home/root/.ash_history''' is a history of commands for the standard shell (ash). If you use bash, it will create the file '''/home/root/.bash_history'''.
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The inserted micro SD card is mounted under '''/media/card'''.
  
Under /home/root/.evolution/ one can find the config and data files for contacts, calender, memos and tasks created on the Freerunner.
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== See also ==
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* [[GTA02 sysfs]]
  
The file /home/root/.ash_history seems to have a false name; correct would be .bash_history.
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==External links==
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* [http://www.pathname.com/fhs/ Home of the Filesystem Hierarchy Standard]
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* [http://www-128.ibm.com/developerworks/linux/library/l-proc.html?ca=dgr-wikiaProcFile#N1030B Fortune Cookies through the /proc Filesystem]
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* [http://ftp2.de.freebsd.org/pub/cLIeNUX/descriptive/DSFH.html The Dotted Standard Filename Hierarchy], yet another very different hierarchy (used in cLIeNUX)
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* [http://www.pathname.com/fhs/pub/fhs-2.3.pdf Filesystem Hierarchy Standard 2.3] (January 29, 2004)
  
[[category:Software]]
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[[Category:Om 2008.8]]
[[category:Openmoko]]
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Latest revision as of 09:04, 9 October 2008

Need improvement: This article or section needs improving. Feel free to add content.

Contents

[edit] UNIX filesystems organisation background

The main ideas to organize the files in the standard Unix filesystem are:

  • group files according to their life cycle.
  • visibility (convenience and access control).
  • historical constraints.

Therefore:

  • User data that should survive at all costs go to /home
  • Configuration files are precious and must be easy to reach, they go in /etc
  • Things that should not survive reboot go to /tmp
  • Things that physically come and go appear in /mnt (old style) or /media (new style)
  • Files that tend to grow too much unsupervised go to /var, so that they can only fill the partition containing this directory.
  • Pseudo files used to communicate with the kernel go to /proc (old style) or /sys (new style). Pseudo files used to communicate with other hardware devices go to /dev.
  • /boot can be used to keep the kernel file in a place the hardware can access easily
  • The remaining directories contain binaries. /lib is for shared libraries. The basic low-level UNIX toolbox is in /bin, the tools needed only by the administrator are in /sbin. Everything else go to /usr.

[edit] The Om 2008.8 filesystem

The root filesystem consists the following directories:

  • bin
  • dev
  • home
  • media
  • proc
  • sys
  • usr
  • boot
  • etc
  • lib
  • mnt
  • sbin
  • tmp
  • var


The first difference to the standard Linux filesystem is the lack of /root directory. This directory is located under /home/root/.

The config and data files for contacts, calendar, memos and tasks are located under the ~/Applications and ~/Documents folders, cf. the Backup article.

The file /home/root/.ash_history is a history of commands for the standard shell (ash). If you use bash, it will create the file /home/root/.bash_history.

The inserted micro SD card is mounted under /media/card.

[edit] See also

[edit] External links

Personal tools

Note : The following is far from being complete


The Filesystem

Openmoko2007.2

The Rootfilesystem consists out of the following directories:

  • bin
  • dev
  • home
  • media
  • proc
  • sys
  • usr
  • boot
  • etc
  • lib
  • mnt
  • sbin
  • tmp
  • var


The first difference to the standard linux filesystem is that Openmoko lacks a /root directory. This directory is located under /home/root/

Under /home/root/.evolution/ one can find the config and data files for contacts, calender, memos and tasks created on the Freerunner.

The file /home/root/.ash_history seems to have a false name; correct would be .bash_history.