The Dollar ($) in Excel formula indicates absolute reference. What does that mean?

It means that the value that immediately succeeds the dollar sign will not change.

In Excel a single cell can be used in 4 different ways:

Let’s take cell B4 as an example:

you can have:

B4
No $ sign this one is relative. It will change if a column/formula that references this column is copied to a different cell.

$B4
 
If a cell references this column, the "B" will never change bit the "4" will change. Only the "B" is Frozen

B$4
If a cell references this column, The "B" will change but the 4 is frozen. So if you use this in a formula, the 4 is absolute.

$B$4
If a cell references this column, it will NOT change if that cell is copied to a different cell. The whole cell is frozen.

Useful Links:
https://www.ablebits.com/office-addins-blog/2015/11/25/relative-absolute-reference-excel/

First

Download git for Windows here : https://git-for-windows.github.io/

Second

Change your "Start in" folder accordingly

Third (optional)

This step is very important if you change the default location of your Git config file:
Do this step only if you want to change default home that git
for windows pulls from your system.

Add a windows environment for HOME and point it to the 
location of your new home folder.

If you are having the following issue :

ping IP -> Success
ping NETBIOS -> Success
nslookup xyz.local -> Success
ping xyz.local  -> FAILURE

The solution is to edit /etc/nsswitch.conf and remove the text “[NOTFOUND=return]”

More on that here:
Avahi and dot-local addresses on Ubuntu
https://andrewgdotcom.wordpress.com/2007/09/28/avahi-and-dot-local-addresses-on-ubuntu-gutsy/