This repo is no more maintained. Check out Text-Logger

Text Logger for mac

Save selected text with shortcut in mac

Tested only for English

Note about OS requires

OS X 10.10 or higher is required.

How to use it

Select text what you want to save
Press shortcut
You can see saved contents from file

Install

Open Automator
Menu > File > New > Choose Service
Search for the Run Javascript Action, and add it to your Service
Paste script in this repo & Set path of log file
Save the service
Open the Keyboard Preferences of the System Preferences pane
Select Shortcuts tab and find the service
Bind shortcut what you want (Recommend Control + Command + Letter)