Enable Clean Url in Drupal on Linux

1. Go to Terminal and type following commands

sudo a2enmod rewrite
sudo vi /etc/apache2/sites-enabled/default

If second command didn't work or it open a new file then try following command

sudo vi /etc/apache2/sites-enabled/000-default

2. Change (line 7 and line 11), "AllowOverride None" to "AllowOverride All".
Save and exit.
3. Restart Apache by following command.

sudo /etc/init.d/apache2 restart

Important HTML Tags

I was going through the html course in W3schools then
I find some important tags which i had never used in html, so
here are these tags :
<small>
<del> // delete with line
<ins> // insert in stead of delete
<mark> // gives color to text
<cite> // Title of the work
<q> // Short Quotation
<map> // tag is used to define a client-side image-map.
An image-map is an image with clickable areas.
<fieldset>

Difference Between apt-get update and apt-get Upgrade

  • apt-get update updates the list of available packages and their versions, but it does not install or upgrade any packages.
  • apt-get upgrade actually installs newer versions of the packages you have. After updating the lists, the package manager knows about available updates for the software you have installed. This is why you first want to update.
  • You should first run update, then upgrade. Neither of them automatically runs the other.

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