Error Validation while installing a magento:

Please enter a valid URL. Protocol is required (http://, https:// or ftp://)

app\design\install\default\default\template\install\config.phtml

Find the textbox where the base url is entered. It will be around line no 85 with name config[unsecure_base_url]

Remove validate-url from its class and save the file.

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Corner of Blog:

” Control of self does man conduct to bliss th’ immortals share;
Indulgence leads to deepest night, and leaves him there “

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