To reset the admin password of a nextcloud installed using the snap package, run
sudo nextcloud.occ user:resetpassword USER_NAME_HERE
It will ask for the new password, once you enter the password and confirmed it your nextcloud admin password will be changed.
Maintenance mode is useful when you are making changes to your nextcloud installation like a software upgrade.
To enable maintenance mode, run the command
php7.3 occ maintenance:mode --on
To disable maintenance mode, run
php7.3 occ maintenance:mode --off
Example
www-data@mail:/www/nextcloud$ php occ maintenance:mode --off Maintenance mode disabled www-data@mail:/www/nextcloud$
See Nextcloud
When trying to upgrade nextcloud, I get the following error
www-data@mail:/www/nextcloud$ php7.3 occ upgrade An unhandled exception has been thrown: OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?) www-data@mail:/www/nextcloud$
To fix this, you need to install APC cache.
apt install php7.3-apcu
For CLI, you need to edit PHP configuration file
vi /etc/php/7.2/cli/php.ini
at the end of the file, add
apc.enable_cli = 1
You can also enable apc for the current command with option
php7.3 -d apc.enable_cli=1 occ upgrade
You can use lost password link in login page to reset password. If you don’t have a valid email set or mail server not working, you can reset the password using SSH.
NextCloud users are stored in table oc_users. If you don’t know the user name, you can use following SQL command to see all available users.
select * from oc_users;
To reset password for a user, login to SSH, go to DocumentRoot for the web site. This is the folder where you uploaded NextCloud files. Then run
php occ user:resetpassword USERNAME_HERE
On following screenshot, i reset password for user “admin”.
It will ask you to enter password 2 times.
See NextCloud
To enable preview for files in nextcloud, you need to install “Preview Generator” from next cloud app store
https://apps.nextcloud.com/apps/previewgenerator
To install login to nextcloud as admin. From right drop down menu, click + Apps link.
Once on Apps page, you can use the search button on right side to search for “Preview Generator” and install it.
You need to install some additional software, on ubuntu/debian install it with
sudo apt install libreoffice ffmpeg imagemagick ghostscript
Now edit config/config.php file of your nextcloud installation, add following code
'enable_previews' => true,
'preview_libreoffice_path' => '/usr/bin/libreoffice',
'enabledPreviewProviders' =>
array (
0 => 'OC\\Preview\\TXT',
1 => 'OC\\Preview\\MarkDown',
2 => 'OC\\Preview\\OpenDocument',
3 => 'OC\\Preview\\PDF',
4 => 'OC\\Preview\\MSOffice2003',
5 => 'OC\\Preview\\MSOfficeDoc',
6 => 'OC\\Preview\\PDF',
7 => 'OC\\Preview\\Image',
8 => 'OC\\Preview\\Photoshop',
9 => 'OC\\Preview\\TIFF',
10 => 'OC\\Preview\\SVG',
11 => 'OC\\Preview\\Font',
12 => 'OC\\Preview\\MP3',
13 => 'OC\\Preview\\Movie',
14 => 'OC\\Preview\\MKV',
15 => 'OC\\Preview\\MP4',
16 => 'OC\\Preview\\AVI',
),
Let’s generate thumbnail for existing files, for this, I enabled shell access for www-data so preview files have proper file ownership (not owned by root).
chsh --shell /bin/bash www-data
Now change to www-data user
su - www-data
Now run
/usr/bin/php /var/www/nextcloud/occ preview:generate-all -vvv
set a cronjob as user www-data
crontab -e -u www-data
*/5 * * * * /usr/bin/php /var/www/nextcloud/occ preview:pre-generate > /dev/null 2>&1
See Nextcloud
To enable SEO url in next cloud, first make sure your web server have mod_rewrite module enabled.
Edit config.php file
vi config/config.php
add following
'overwrite.cli.url' => 'https://yourdomain.com/', 'htaccess.RewriteBase' => '/',
overwrite.cli.url may already there, in that case, don’t add it again.
Now run
sudo -u www-data php /var/www/nextcloud/occ maintenance:update:htaccess
See NextCloud
NextCloud is a private file storage, share, and sync platform like DropBox. It is a fork of OwnCloud. Both software is OpenSource. NextCloud is available for download from
Install NextCloud Desktop client on Ubuntu
Enable SEO url in nextcloud
Install Preview Generator in Nextcloud
Reset NextCloud user password from command line
NextCloud APCu not available for local cache
Reset nextcloud admin password (snap install)
See File Hosting