Windows users are used to be able to create shortcuts to have fast access to their files and folders. This is is especially useful when these are buried deep in their system. This feature isn't as obvious on most Linux systems as it is on Windows. Create a shortcut on a Unix-like operating system using ... Read more
Google Forms are used very extensively these days for making surveys and questionnaires. Apart from conducting such studies, they are also used in some educational institutions for taking quizzes and exams. This free web-based application provides us with so much flexibility to design and present the questions that Google Form is the first name that ... Read more
If all your visitors shall access your website with a URL like www.domain.com and not without www, use the following apache rewrite rule for redirecting them. RewriteEngine On RewriteCond %{HTTP_HOST} !^www RewriteRule (.*) http://www.%{HTTP_HOST}$1 [L,R] The apache rewrite rule can be added in a .htaccess file in the website root directory or if you use ... Read more
This tutorial explains how to change your DNSSEC algorithm for a DNS zone managed by ISPConfig 3. In this case, the current algorithm is 7 (NSEC3RSASHA1), and we will be moving to algorithm 13 (ECDSAP256SHA256) Log in to the panel and open the settings for the zone. Enable the new algorithm, but DON'T disable the ... Read more
Sometimes you might have to work with the Spamassin Bayes Token database. This is the database that is used by the SpamAssassin Self Learning (Bayesian) Classifier to store the ham and spam tokens. This tutorial will show you how to make a backup of that database. E.g. when you want to move it to a ... Read more
When you start Windows 8.1 setup from a DVD or iso file in a VirtualBox VM, you may get the following error: This PC can’t run Windows 8.1 Preview You can’t install Windows 8.1 Preview because your processor doesn’t support CompareExchange128. Solution Run the following command at the command prompt of the host computer "c:\Program ... Read more
You get the following error message while installing a .deb package on Debian or Ubuntu or while installing Updates? E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? This error means that there is already an apt process running or ... Read more
This tutorial shows you how to solve the RoundCube webmail error message: config.inc.php was not found. on an ISPConfig Debian server that uses Nginx as the web server. Solution RoundCube webmail is accessed on an ISPConfig Nginx web server through the apps vhost. The PHP-FPM of the apps vhost is running under the user and group ... Read more
To repair a VMware virtual hard disk on Windows 10, go to the VMWare site and download vdiskmanager-windows-7.0.1.exe2.zip (see also https://kb.vmware.com/s/article/1023856) Repair VMware Virtual Hard Disk on Windows 10 Unzip the folder. Rename the file to vmware-vdiskmanager.exe and copy it following location. C:\Program Files\VMware\VMware Workstation or C:\Program Files (x86)\VMware\VMware Workstation if you have 64-bit operating system. Shut down ... Read more
While expanding VMware workstation, you might get the following error: Error VMware Workstation error message: The specified virtual disk needs repair Try the following solution, Solution Repair the virtual hard disk by following this tutorial. https://kb.vmware.com/s/article/1023856