2015-02-12 07:07:47 +00:00
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Invocation
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==========
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2016-03-08 00:17:59 +00:00
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The scripts can generally just be run. Options can be set on the
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command line or by exporting variables to override those present in
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lib/img-defaults. -h to get help.
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2015-02-12 07:07:47 +00:00
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2016-03-08 00:17:59 +00:00
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The image building scripts expect to be able to invoke commands with
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sudo, so if you want them to run non-interactively, you should either
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run them as root, with sudo -E, or allow your build user to run any
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sudo command without password.
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2015-02-12 07:07:47 +00:00
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2016-03-08 00:17:59 +00:00
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Using the variable ``ELEMENTS_PATH`` will allow to specify multiple
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elements locations. It is a colon (:) separated path list, and it
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will work in a first path/element found, first served approach. The
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included elements tree is used when no path is supplied, and is added
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to the end of the path if a path is supplied.
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By default, the image building scripts will not overwrite existing
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disk images, allowing you to compare the newly built image with the
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existing one. To change that behaviour, set the variable
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2016-08-15 19:13:52 +00:00
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``OVERWRITE_OLD_IMAGE`` to any value that isn't ``0``. If this value is
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zero then any existing image will be moved before the new image is
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written to the destination.
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2016-03-08 00:17:59 +00:00
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Setting the variable ``DIB_SHOW_IMAGE_USAGE`` will print out a
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summarised disk-usage report for the final image of files and
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directories over 10MiB in size. Setting ``DIB_SHOW_IMAGE_USAGE_FULL``
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will show all files and directories. These settings can be useful
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additions to the logs in automated build situations where debugging
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image-growth may be important.
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