A simple script to backup github repositories

github-backups.sh

#!/bin/bash -e
#
# This script clones or fetches the latest updates from selected repo's and then tar's them up
#
CHECKOUT_DIR=$HOME/backups/checkouts
BACKUP_DIR=$HOME/backups/tarballs
LOG=/tmp/github-daily-backups.log
REPOS="vm-main vm-cdn vm-operations-chef vm-iphone vm-contrib"

function clone_or_fetch {
  cd $CHECKOUT_DIR
  if [ -d $1 ]; then
    echo "Fetching $1" >> $LOG
    cd $1
    git fetch origin >> $LOG
  else
    echo "Cloning $1" >> $LOG
    git clone -n [email protected]:volunteermatch/${1}.git >> $LOG
  fi
}

# Fetch (update) or clone (checkout) each repo
echo `date` :  starting $0 >> $LOG
for repo in $REPOS
do
  clone_or_fetch $repo
done

# Create the daily tarball using the day of the month in the filename
cd $CHECKOUT_DIR
echo Tarring and bzipping backup to $BACKUP_DIR/nightly-for-day-`date +%d`.tbz >> $LOG
tar -cjf $BACKUP_DIR/nightly-for-day-`date +%d`.tbz $REPOS >> $LOG
echo `date` : finished $0 >> $LOG