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Add stage specification instructions

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Sam Holmes 2017-01-20 17:36:29 +00:00
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@ -45,7 +45,7 @@ The build of Raspbian is divided up into several stages for logical clarity
and modularity. This causes some initial complexity, but it simplifies and modularity. This causes some initial complexity, but it simplifies
maintenance and allows for more easy customization. maintenance and allows for more easy customization.
- Stage 0, bootstrap. The primary purpose of this stage is to create a - **Stage 0** - bootstrap. The primary purpose of this stage is to create a
usable filesystem. This is accomplished largely through the use of usable filesystem. This is accomplished largely through the use of
`debootstrap`, which creates a minimal filesystem suitable for use as a `debootstrap`, which creates a minimal filesystem suitable for use as a
base.tgz on Debian systems. This stage also configures apt settings and base.tgz on Debian systems. This stage also configures apt settings and
@ -53,7 +53,7 @@ maintenance and allows for more easy customization.
minimal core is installed but not configured, and the system will not quite minimal core is installed but not configured, and the system will not quite
boot yet. boot yet.
- Stage 1, truly minimal system. This stage makes the system bootable by - **Stage 1** - truly minimal system. This stage makes the system bootable by
installing system files like `/etc/fstab`, configures the bootloader, makes installing system files like `/etc/fstab`, configures the bootloader, makes
the network operable, and installs packages like raspi-config. At this the network operable, and installs packages like raspi-config. At this
stage the system should boot to a local console from which you have the stage the system should boot to a local console from which you have the
@ -62,7 +62,7 @@ maintenance and allows for more easy customization.
really usable yet in a traditional sense yet. Still, if you want minimal, really usable yet in a traditional sense yet. Still, if you want minimal,
this is minimal and the rest you could reasonably do yourself as sysadmin. this is minimal and the rest you could reasonably do yourself as sysadmin.
- State 2, lite system. This stage produces the Raspbian-Lite image. It - **Stage 2** - lite system. This stage produces the Raspbian-Lite image. It
installs some optimized memory functions, sets timezone and charmap installs some optimized memory functions, sets timezone and charmap
defaults, installs fake-hwclock and ntp, wifi and bluetooth support, defaults, installs fake-hwclock and ntp, wifi and bluetooth support,
dphys-swapfile, and other basics for managing the hardware. It also dphys-swapfile, and other basics for managing the hardware. It also
@ -77,13 +77,24 @@ maintenance and allows for more easy customization.
you were looking for something between truly minimal and Raspbian-lite, you were looking for something between truly minimal and Raspbian-lite,
here's where you start trimming. here's where you start trimming.
- Stage 3, desktop system. Here's where you get the full desktop system - **Stage 3** - desktop system. Here's where you get the full desktop system
with X11 and LXDE, web browsers, git for development, Raspbian custom UI with X11 and LXDE, web browsers, git for development, Raspbian custom UI
enhancements, etc. This is a base desktop system, with some development enhancements, etc. This is a base desktop system, with some development
tools installed. tools installed.
- Stage 4, complete Raspbian system. More development tools, an email - **Stage 4** - complete Raspbian system. More development tools, an email
client, learning tools like Scratch, specialized packages like sonic-pi and client, learning tools like Scratch, specialized packages like sonic-pi and
wolfram-engine, system documentation, office productivity, etc. This is wolfram-engine, system documentation, office productivity, etc. This is
the stage that installs all of the things that make Raspbian friendly to the stage that installs all of the things that make Raspbian friendly to
new users. new users.
### Stage specification
If you wish to build up to a specified stage (such as building up to stage 2 for a lite system), place an empty file named `SKIP` in each of the `./stage` directories you wish not to include.
Then remove the `EXPORT*` files from `./stage4` (if building up to stage 2) or from `./stage2` (if building a minimal system).
```
# Example for building a lite system
$ touch ./stage3/SKIP ./stage4/SKIP
$ rm stage4/EXPORT*
```