Server migration of Magento

1. Take the back of backup of old database (backup/data.sql).
2. Take the backup of your Themes/Templates (app/design/frontend), Skins, Images (media), local.xml (app/etc/loca.xml) and Custom Modules folders.
3. Change your current directory to magento ((/var/www/html/magento).
4. Change permissions for some of the directories of magento folder.
i. mv php.ini.sample php.ini
ii. chmod o+w var var/.htaccess app/etc
iii. chmod -R o+w media
5. Place the backup of old database (backup/data.sql).
6. mysql -hDBHOST -uDBUSER -pDBPASS DBNAME < backup/data.sql
7. Run magento installer and follow the installation steps.

8. Replace the backup of Themes/Templates (app/design/frontend), Skins, Images (media) and Custom Modules folders.

9. Update
You need to edit a few things in the database if your changing domain names or if you’re using a test server that’s just an IP address. Using PHPMyAdmin, Navicat or something similar, connect to the database. Table core_config_data has rows that need to be changed and updated with the new url. For a single store installation you need to just update:
path: value:
web/unsecure/base_url http://[you_domain_here]/
web/secure/base_url https://[your_secure_domain_here]/
With multiple stores you need also change:
path: value:
web/unsecure/base_url http://[you_domain_here]/
web/secure/base_url https://[your_secure_domain_here]/
web/unsecure/base_link_url http://[your_domain_here]/
web/unsecure/base_skin_url http://[your_domain_here]/skin/
web/unsecure/base_media_url http://[your_domain_here]/media/
web/unsecure/base_js_url http://[your_domain_here]/js/
web/secure/base_link_url https://[your_secure_domain_here]/
web/secure/base_skin_url https://[your_secure_domain_here]/skin/
web/secure/base_media_url https://[your_secure_domain_here]/media/
web/secure/base_js_url https://[your_secure_domain_here]/js/

Enjoy Programming!!