This sh file helps you when you work in a strict rebase-then-merge git policy environment. This would essentially keep the chronology of your commits even after they are rebased.

rebase-my-branches.sh

#!/bin/sh
set -e
changes=`git status -s | grep -v "??" | wc -l`
if [ "$changes" -gt "0" ]; then
   echo "found $changes local changes. stashing them." 
   git stash 
fi
current_branch=`git branch | grep '*' | cut -d ' ' -f2`
echo "update develop from origin"
git pull origin develop:develop
echo "Rebasing branches:  "
for branch in `git branch | grep -v master | grep -v develop | sed -e s/\*//g`; do
    echo "    branch: $branch"
    git checkout $branch
    echo "    rebasing over develop ... "
    git rebase --committer-date-is-author-date develop
    git push -f
done
echo "All branches are rebased. going back to develop"
git checkout "$current_branch"
if [ "$changes" -gt "0" ]; then 
   echo "bringing back local changes"
   git stash pop 
fi