Generally speaking I prefer replacing (not just overwriting) the vendor folder and the Elgg core bundled plugin folders in the mod directory plus checking for differences in the files elgg-config/settings.php and and .htaccess that might need to be resolved. In case of an update from 2.3.10 to 2.3.11 a comparison showed that there are no files in 2.3.10 that are no longer there in 2.3.11, only a few new files in 2.3.11 and then only changed files. So, when updating from 2.3.10 to 2.3.11 you could just overwrite the mod and vendor folders and overwrite composer.json and composer.lock files in the main folder and it should be alright. Nonetheless, a backup of the database should always be made first before upgrading (and making a backup of the install folder and data directory regularly is a good idea, too). After overwriting the files you would run upgrade.php (or clicking on the Upgrade button in the admin area) and you should be done.

http://learn.elgg.org/en/2.3/admin/upgrading.html

Very helpful.

Thank you very much

https://elgg.org/discussion/view/1074046/data-directory

du muss das machen: /httpdocs/save

Bei der Installation musst Du den vollständigen Pfad zu dem von Dir angelegten Verzeichnis angeben, dass Du als Datenverzeichnis verwenden willst. Der vollständige Pfad beginnt beim Root-Verzeichnis des Servers und ich vermute, der Pfad /httpdocs/save tut dies nicht sondern ist nur der relative Pfad beginnend vom sogenannten "Document Root"-Verzeichnis. Das Document-Root-Verzeichnis ist das Verzeichnis auf das die Domain Deiner Seite gemappt wird (http://seiten.url greift auf das Document-Root-Verzeichnis zu). Aus Gründen der Sicherheit solltest Du das Datenverzeichnis nicht innerhalb des Document-Root-Verzeichnisses oder eines Unterverzeichnisses darin anlegen. Du solltest also das "save"-Verzeichnis ausserhalb httpdocs anlegen und dann bei der Installation den gesamten Pfad zu diesem Verzeichnis angeben.

I can't give you a working solution but I can only suggest a starting point that might be of some use: RSS Import plugin (https://elgg.org/plugins/1090220). As I understand the plugin description (haven't tried it myself) you can pull posting from other sites via a rss feed (which the other site would have to provide) and add then on your site. This can be done either manually or in an automatic way controlled by a cronjob. Two things would require some work though: first, the plugin hasn't been upgraded for Elgg 2 so it's quite likely not fully working (or not working at all) without some changes in the code. Secondly, the plugin would allow to add the external posting right now only as a blog, bookmark or page entry but not yet as a news item. As the news plugin is based on the bundled blog plugin this should be not too difficult to achive.

I can't provide any further help though. So, you would have either getting it working on your own or you would have to hire a developer.

sorry!!
I might find it.

try event manager https://elgg.org/plugins/736695

yes

I got EventManager and try it.

It's very good!

I appreciate.