Git
What commit am I on?
root@mineos games/minecraft# git log -n 1 | grep commit
commit 2d22dc16952c70b0124ce0ee3ec1b5671452ad02
What commits are out there?
root@mineos games/minecraft# git rev-parse HEAD
5e7c7db6921544b441857e3f222f759bf0e89829 <--- this is the latest commit you know about!
root@mineos games/minecraft# git fetch
root@mineos games/minecraft# git rev-parse origin/master
2d22dc16952c70b0124ce0ee3ec1b5671452ad02 <--- this is the latest commit I've written!