Backup a Github repository into a local file. Useful when retiring a Github repository, but keeping a backup copy for a rainy day in Dropbox / Drive / Box.

backup

#!/bin/bash
# Backup the repositories indicated in the command line
# Example:
# bin/backup user1/repo1 user1/repo2
set -e
for i in $@; do
  FILENAME=$(echo $i | sed 's/\//-/g')
  echo "== Backing up $i to $FILENAME.bak"
  git clone git@github.com:$i $FILENAME.git --mirror
  cd "$FILENAME.git"
  git bundle create ../$FILENAME.bak --all
  cd ..
  rm -rf $i.git
  echo "== Repository saved as $FILENAME.bak"
done

restore

#!/bin/bash
# Restore the repository indicated in the command line
# Example:
# bin/restore filename.bak
set -e

FOLDER_NAME=$(echo $1 | sed 's/.bak//')
git clone --bare $1 $FOLDER_NAME.git

verify

#!/bin/bash
# Verify the backup file. Both the .bak file and the corresponding .git folder must exist
# Example:
# bin/verify filename1.bak filename2.bak
set -e
for i in $@; do
  FOLDER_NAME=$(echo $i | sed 's/.bak/.git/')
  echo "== Contents of $i"
  
  cd $FOLDER_NAME
  echo "Last commit: $(git log --name-status HEAD^..HEAD -n1 | egrep '(    )|(Date)' )"
  cd ..

  echo
  git bundle list-heads $i
  echo
done