adding comma to each line using sublime text 2

I am trying to use sublime's text search and replace function and regex to match a string of number in each line and append a comma to each. So here's the sample file:

 273794103
 418892296
 134582886
 380758661
 109829186
 248050497
 2167935715
 374858669

I want this to be:

 273794103,
 418892296,
 134582886,
 380758661,
 109829186,
 248050497,
 2167935715,
 374858669,

I tried doing this (\d+)\n and replacing it with $1, but this doesn't work. Any idea why? FYI for those who are not into sublime but into regex, Sublime Text uses Python's regex engine.

To add comma to any line

1. Select the lines you want to modify

2. CTRL + SHIFT + L

3. RIGHT_ARROW

4. COMMA

Using ctrl + shift + L is how you can modify all selected lines. Very handy :-)

I'd recommend this

'Find What': $ // matching all ends of your lines
'Replace With': , // replaces all line ends with a coma

this will work with any file :-)

Here's how you'd do it on a Mac:

Command+shift +L > Right Arrow > Comma

and Windows/Linux:

Ctrl+Shift +L > Right Arrow > Comma

Replacing .+ with $0, worked for me

For Window User:

1. select all line OR select part of line => Ctrl+A.

2. Bring cursor to last of each Line => Ctrl+Shift+L

3. Add comma(,) which will reflect to all line.

** If you want to add comma(,) at start of each Line , After step 2 press => Home(button from keyboard , all cursors will head to start of the line)

Finally Ctrl+s to save the changes.

cheers