How can I generate a git diff of what's changed since the last time I pulled?

Question

I\'d like to script, preferably in rake, the following actions into a single command:

1. Get the version of my local git repository.
2. Git pull the latest

Answer 1

If you drop this into your bash profile you'll be able to run grin (git remote incoming) and grout (git remote outgoing) to see diffs of commits that are incoming and outgoing for origin master.

function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'
}
function gd2 { 
 echo branch \($1\) has these commits and \($2\) does not 
 git log $2..$1 --no-merges --format='%h | Author:%an | Date:%ad | %s' --date=local
}
function grin {
 git fetch origin master
 gd2 FETCH_HEAD $(parse_git_branch)
}
function grout {
 git fetch origin master
 gd2 $(parse_git_branch) FETCH_HEAD
}