How to install wifi driver in Debian/Gnu Linux

Install wifi driver in Debian/Gnu Linux

Notes:
System used: thinkpad T410, Debian 8 Jessie, XFCE amd64(64bit)

1. Identify your wifi device using terminal and entering the command:

     $ lspci


      My machine's wifi device name is:

      03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000 [Condor Peak] 

2. Using a computer connected to the internet, search the package from here and chose one listed mirror on the website. Download the file/package(firmware-iwlwifi_0.43_all.deb) and save it on usb. Insert the usb and copy the file/package on the Documents folder with your machine without wifi. Then, go to the Documents folder and open the terminal from the file manager(Thunar, Nautilus, Konqueror or Dolphin) by right clicking the mouse and choosing the Open Terminal Here option. 

3. Install the file/package as root:

             # dpkg -i firmware-iwlwifi_0.43_all.deb

4. Reboot the machine and the wifi will now work.

MD5SUM

MD5SUM

According to Wikipedia, md5sum is used to verify that the file is not tampered and it has not changed as a result of file transfer, a disk error or non malicious meddling.

Simply put, if the md5sum matches that of the original file/source then you are certain that the file is indeed a copy the original file and will certainly work.

I got my MD5 & SHA utility on this website and used it on my Windows OS. I downloaded the Debian-live-8.2.0-amd64-xfce-desktop.iso from their website using torrent. After the downloading the file, I performed the following:

Get the md5sum of Debian Live from Debian's website:

Run Md5sum & Sha Checksum, click on FILE button and choose the iso image:

The md5sum matched! Ooorah!