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How to put extra files in fimage
This tutorial explains how to insert new files inside an fimage generated with the Phrozen SDK
If you need to product in volume some devices based on the FOX Board, could be very usefull to generate a customized fimage
with all the executable and script files requested from your application. In that way you could clone your environment just
flashing each board instead of transfer each file on a factory default board.
With a customized fimage it is possible also to put files in the read-only folders to change, for example, the default web page,
to enable new users or to change the default root password, etc. etc.
Example 1 - Put a script to start at boottime
On the factory default FOX Boards exists a folder named /etc/init.d/boottime
. If you write a script file inside this
folder it will start at Linux start-up. This is read/write folder so you can add directly the boot-time script file just
creating it but let we see how to embed this file in the fimage:
First of all install the Phrozen SDK and make a default standard image (see Create a working image using Phrozen SDK
or Install the Phrozen SDK on Win XP
Move to the Phrozen SDK root directory (usually /home/fox/devboard-R2_01) and then move to packages/initscript
Create here a folder named myfiles
and create inside it the script file to execute at boot-time.
Use for example the file myscript
echo "This is my script" > /var/myscriptoutput
This script, when started on the FOX Board, will create a file named myscriptoutput
in the /var
contains the line "This is my script". The /var
folder is implemented in RAM so it will lost each time the FOX boot-up and
creates again from our script.
Now we have to create a Makefile inside the myscript
folder to use to add our file while the SDK generates the fimage. This is
and example of Makefile to save in myscript.
OWN = -o root -g root
@echo "I'm installing my script file... "
$(INSTALL) $(OWN) -m 0755 myscript "$(prefix)"/etc/init.d/boottime