PosterousBackup is a project mainly written in Groovy, it's free.
One easy way to backup all of your posterous blogs
# groovy posterous.groovy
This is posterous export script v 0.1
error: Missing required options: u, p, o
usage: groovy posterous.groovy -u email@posterous -p password -o outputFolder
-h,--help provides full help and usage information
-o,--output An eventually existing output folder, where all data will be output. Beware, if some data exists in that folder, it may be overwritten.
-p,--password Unfortunatly one have to give its password to this little script
-u,--username Sets posterous mail address here
On the first run grape (groovy package manager) will download and install all required dependencies.
+---knackfx.posterous.com all-your-bases-are-belong-to-rest.xml cant-wait-for-the-671.xml knack-it.xml netbeans-671-available-for-download.xml rest-in-game.xml serve-me-good-games.xml whats-new-today.xml ---riduidel.posterous.com il-mavait-prevenu-le-bougre.xml il-mavait-prevenu-le-bougre_0.png il-mavait-prevenu-le-bougre_1.jpg tester-lutilisation-de-la-memo.xml tester-lutilisation-de-la-memo_0.gif tester-lutilisation-de-la-memo_1.jpg the-big-band-theory.xml the-gaf-collection-collected.xml the-gaf-collection-collected_0.jpg the-gaf-collection-collected_1.jpg xkcd-movie-narrative-charts-0.xml
<post>
<title><!-- posterous title--></title>
<date>2008-12-31T17:48:00.000+0100<!-- posterous post date in a quite standard form --></date>
<author>
<name><!-- author name --></name>
<pic><!-- author pic --></pic>
</author>
<body><![CDATA[
<!-- post body, protected from XML interpreting by the CDATA section
]]></body>
<comments>
<comment>
<author>
<name></name>
<pic></pic>
</author>
<date></date>
<body><![CDATA[
]]></body>
</comment>
</comments>
</post>
creative commons license : paternity, share-alike, no commercial use.