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ownCloud is a free, open source, Dropbox-like file synchronization and cloud service. Since it can be setup and hosted on private servers it has no set limit on storage capacity or the number of connected users.



  • File storage in conventional directory structures or via WebDAV;
  • Encryption of user files;
  • Synchronization of ownCloud Client running Windows (Windows XP, Vista, 7 and 8), Mac OS X (10.6 or better), or Linux;
  • Calendar (also as CalDAV);
  • Task scheduler;
  • Address book (also as CardDAV);
  • Music streaming (through Ampache);
  • User and group administration (via OpenID or Lightweight Directory Access Protocol);
  • Sharing of content across groups or public URLs;
  • Online text editor with syntax highlighting and code folding;
  • Bookmarking;
  • URL shortening Suite;
  • Photo gallery;
  • Video viewer;
  • Portable Document Format viewer (using PDF.js);
  • Viewer for OpenDocument Files (.odt, .odp, .ods);
  • Firefox Sync/Mozilla Sync hosting — Mozilla Firefox users can store all history, form data, bookmarks etc. in an ownCloud server;
  • External storage such as Dropbox, GoogleDrive, or Amazon S3 can be mounted to an ownCloud installation;
  • Customizable with one-click application install;
  • Logging Module: supports logging of file-related actions, logs, who accessed what, when and from where. Only available ownCloud Business, Enterprise and Education Editions.


The following will be needed in order for ownCloud to function properly:


USE flags

If vhosts USE will be enabled, so do before the install. The following is a list of possible USE flags.

Cannot load package information. Is the atom www-apps/owncloud correct?


Install ownCloud:

root #emerge --ask www-apps/owncloud

Optional: Installing ownCloud server in the vhost directory via webapp-config


Optional: Updating ownCloud server in the vhost directory via webapp-config

This command will update the installed ownCloud server which is located in the directory cloud to the version 5.0.14

root #webapp-config -h myDomain.com -d cloud -U owncloud 5.0.14

Requires the webapp-config command (from app-admin/webapp-config):

If the vhosts USE flag is enabled, this command will install the ownCloud server version 5.0.13-r1 for the domain myDomain.com to the directory cloud which will (normally) be located in /var/www/myDomain.com/htdocs/

root #webapp-config -h myDomain.com -d cloud -I owncloud 5.0.13-r1

Make sure that this directory is added as a vhosts directory.


Performance tweaks

Activate ownCloud Cronjobs (for more information):

root #crontab -u apache -e
 */15  *  *  *  * php -f /var/www/mydomain.com/htdocs/cloud/cron.php

Enable APCu

root #PHP_TARGETS="php5-4" emerge -av dev-php/pecl-apcu

Then restart the php-fpm service:

root #/etc/init.d/php-fpm restart

To verify if apc is working, copy apc.php in the www folder

root #cp /usr/share/php/apc/apc.php /var/www/

Open it with a preferred web browser.

Misc tweaks

Disable integrity check

Currently, the integrity checker complains when there is a .webapp file in the root of the OwnCloud installation directory. This file is generated, and required, by the webapp-config tool used to install all web apps on Gentoo. One possible temporary solution to this is to disable integrity check. This can be accomplished by adding the following to config.php:

FILE config/config.php
'integrity.check.disabled' => true


ownCloud client

Install the client by emerging the following package:

root #emerge --ask net-misc/owncloud-client


Optional: Removing ownCloud server from the vhost directory via webapp-config

This command will remove the installed ownCloud server version 5.0.14 which is located in the directory cloud.

root #webapp-config -h myDomain.com -d cloud -C owncloud 5.0.14

gnome-keyring support

You may have to install libgnome-keyring to enable owncloud-client support for gnome-keyring [1]:

root #emerge --ask gnome-base/libgnome-keyring

Otherwise it may try to use kwallet.

See also

  • Dropbox — a closed source file synchronization and cloud service utility built from open and closed source software.
  • SparkleShare — a cross platform, free, open source, Dropbox-like, git-based collaboration and file sharing tool.
  • Webapp-config — Gentoo's installer for web-based applications.