Some common port numbers for firewall configuration (Reference Post)

To configure firewall as a system admin or even as a normal computer user we need to know the port numbers which will remain open. Here is a list of common port numbers of some common services.

Recursively change permission of files or directories only (*nix)

The issue arises because we may not need the same permission for the files as like the directories. Take a website as example. Generally website files have 644 permission and directories have 755 permission.

Welcome Me back, so long after 278 days

Okay here is the promise, I will post all new and fresh content regularly and keep the blog live. At least I can post my Facebook status here. ;)

জাতীয় পরিচয়পত্রের নম্বর বিশ্লেষণ

বাংলাদেশী প্রাপ্তবয়স্কদের বেশিরভাগেরই জাতীয় পরিচয় পত্র আছে। অনেকে এটাকে ভোটার আইডি বলেন ভুল। এটা বাংলাদেশের National ID Card বা জাতীয় পরিচয় পত্র।

Basic and Advanced Tips: How to Change Permalinks without affecting Google

Here you can change your permalinks as you like and make it SEO friendly. You will find here 4 predefined permalink structure. You can set them. There's also a box called Custom, You can define your own permalink structure here.