diff --git a/bin/updaterepos.sh b/bin/updaterepos.sh
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+++ b/bin/updaterepos.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+# 
+# Usage:
+# ./update_git_repos.sh [parent_directory] 
+#
+#   example usage:
+#   ./update_git_repos.sh projects/ [MAKE SURE YOU USE / SLASHES]
+#
+# stolen from:
+# http://stackoverflow.com/a/36800741/733677
+#
+
+updateRepo() {
+    local dir="$1"
+    local original_dir="$2"
+    cd $dir # switch to the git repo
+    repo_url=$(git config --get remote.origin.url)
+    
+    echo "$(tput setaf 136)Updating Repo: $dir with url: $repo_url$(tput sgr0)"
+    
+    main_branch="master"
+    if [ "$repo_url" == "git@someserver:repo/repo.git" ]; then # if you have a repo where the primary branch isnt master
+        $main_branch="trunk"
+    fi
+
+    # update the repo, then stash any local changes
+    echo "$(tput setaf 240)" # gray
+    echo "calling: git fetch --all && git stash"
+    echo "$(tput sgr0)" # color reset
+    (git fetch --all && git stash)
+    current_branch=$(git rev-parse --abbrev-ref HEAD)
+
+    # switch to master/trunk branch and rebase it, then switch back to original branch
+    if [ $current_branch != $main_branch ]; then
+        echo "$(tput setaf 240)" # gray
+        echo "calling: git checkout $main_branch && git rebase && git checkout $current_branch"
+        echo "$(tput sgr0)" # color reset
+        (git checkout $main_branch && git rebase && git checkout $current_branch)
+    fi
+
+    # rebase the original branch and then stash pop back to original state
+    echo "$(tput setaf 240)" # gray
+    echo "calling: git rebase && git stash pop on branch: $current_branch"
+    echo "$(tput sgr0)" # color reset
+    (git rebase && git stash pop ) 
+
+    # switch back to the starting directory
+    cd $original_dir
+    echo ""
+}
+
+directory_to_update=${1}
+
+if [ -z "$directory_to_update" ] ; then
+    echo "$(tput setaf 240)no directory passed in, using current directory$(tput sgr0)"
+    directory_to_update=$PWD
+fi 
+
+echo "$(tput setaf 240)"
+echo "Updating git repos in directory: $directory_to_update"
+echo "$(tput sgr0)"
+
+count=0
+
+for dir in $(find $directory_to_update -maxdepth 4 -type d -name .git | xargs -n 1 dirname); do
+    updateRepo $dir $directory_to_update
+    ((count+=1))
+done
+
+echo "$(tput setaf 76)" # green
+echo "✓ $count local git repos have been updated!"
+echo "$(tput sgr0)" # color reset
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