Emacs commands
To exit: ctrl+x,ctrl+c


Git commands
If you want to add a file:
   git add <filename> (let Git know you'll add A.txt)
   git commit -m "Added A.txt" (Ask Git to store A.txt in its local repository
   git push (Ask Git to upload the change to a server so that others can have access to it)

If you change/modify a file:
   git add a file (let Git know you changed a file)
   git commit -m "with some message"
   git push

To download the Git repository
   (only once git clone https://github.com/tianshilu/compbio.git)
   git pull

Additiona commands:
   git log <filename>
   git diff