Bhupendra Kunwar Blog

How to Guide:  Setting up a Cron Job in Linux

1. Enter the following command in the console
crontab -e

2. Adding the cron job. Edit the cron file. You cron job shall look like this
1 2 3 4 5 /path/to/command

eg

10 3 * * * /root/backup.sh

This will run the cron job at 3.10 am

* 1: Minute (0-59)
* 2: Hours (0-23)
* 3: Day (0-31)
* 4: Month (0-12 [12 == December])
* 5: Day of the week(0-7 [7 or 0 == sunday])
* /path/to/command - Script or command name to schedule

3. If you want to execute a php script instead of a shell command, your cron job shall look like this

1 2 3 4 5 /path/to/php/interpreter -q /path/to/command

eg.

10 3 * * * /usr/bin/php -q /var/www/html/cron.php

1. SEO friendly URLs and non-www URLs

While using SEF Plugins with Joomla, one of the common issue encountered is that the default urls are without www i.e. http://domain.com (assuming that Joomla is installed in the root domain)

This might irritate webmasters causing duplicate urls indexing
Solution:

a. Change your Live Site URL to http://www.domain.com

Download the config file “configuration.php” and edit the variable $mosConfig_live_site value to set it to http://www.yourdomain.com.

This will cause all base URL to change to http://www.domain.com, hence all your internal page urls would be linked through urls with www

b. Use htaccess/Mod_Rewrite to redirect your domain http://domain.com to http://www.domain.com

Here is how

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^uttaranchalmusic.com
RewriteRule (.*) http://www.uttaranchalmusic.com/$1 [R=301,L]

1. Download SEF Extension
   http://www.artio.cz/en/joomla-extensions/artio-joomsef
   http://www.artio.cz/en/downloads/joomla-extensions/artio-joomsef-1-4-0/download
2. Install SEF extension
   i) Login to Joomla Administration Panel (http://www.yourdomain.com/administrator/)
   ii) Installers > Components > Upload the package file (downloaded zip file)
   
   
3. Customize the links
   i) Edit the file /joomla installation dir/components/com_sef/joomsef.php and
   ii) Comment the following line of php code:
   if (isset($sefConfig->excludeSource) && $sefConfig->excludeSource && $sefConfig->reappendSource & isset($Itemid)) {
   $sefstring .= (strpos($sefstring, ‘?’) !== false ? ‘&’ : ‘?’).’Itemid=’.urlencode($Itemid);
   //$URI->anchor .= (($URI->anchor) ? ‘-’ : ”).urlencode(’ii’.$Itemid
   }
   
   
4. To Edit the links manually from the Joomla panel, go to Components > ARTIO JoomSEF > View/Edit Custom Redirects