Script to backup your git repos and optionally push them to another remote.

git-backup.sh

#! /bin/sh
#
# Script to backup git repositories.
#
# For each subdirectory ending in .git:
#   - perform a git fetch from origin.
#   - perform a git push --all to all remotes other than origin.

repos=`find * -type d -name \*.git`

fetch_repo() {
    repo="$1"
    git --git-dir "${repo}" fetch origin
}

push_repo() {
    repo="$1"
    for remote in `git --git-dir "${repo}" remote | grep -v origin`; do
	echo "Pushing to ${remote}..."
	git --git-dir "${repo}" push --all ${remote}
    done
}

for repo in ${repos}; do
    echo "Updating ${repo}..."
    fetch_repo "${repo}"
    push_repo "${repo}"
done