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Install and configure Apache web-server on Ubuntu or Debian (RaspberryPi)

To create an Apache-based web server, using a common Ubuntu or Debian machine, proceed as follows.   1. Install Apache  sudo apt-get update  sudo apt-get install apache2  To check if it’s correctly installed, go to the site  localhost  you should find ‘It works!  2. Configuration   All configuration files can be found in  “/etc/apache2”  this can be displayed via …

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How to display passwords entered by browsers or hidden by asterisks in a plain text

All the new generation browsers allow you to store passwords entered by the user, so that you can enter them in the forms the next time you visit the site.  Internet Explorer used to do this, but so do Firefox, Edge, and Chrome as of recently.      For IE and Edge, passwords are encrypted …

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How to remove active partition flag in windows systems

If you were in the condition of managing disks and partitions on a Windows system (XP->10), you have surely used the system tool ‘Disk Management’.   In particular, when you create or modify system partitions (those where an operating system is present), you need to mark them as ‘active’.    This operation is not difficult, just right-click on the partition and …

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How to check if an email address exists an is reachable

This is a common occurrence where you receive at least one rejection email with the following Message Delivery Status (or Subsystem), as a result of sending it to a problematic or non-existing address.   So to check if an address actually exists or  ‘receives’ mail you could simply send an email to that address (with the ‘delivery notification’ flag active) …

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