bin/git-subup

   1 #!/bin/bash
   2 # Checkout and update source for all registered submodules (.gitmodules).
   3 # Optionally 'git pull' on each submodule to check for updates.
   4
   5 # Ensure all submodules (and child submodules) are checked-out
   6 git submodule update --init --recursive
   7
   8 # Update submodules' remotes based on .gitmodules
   9 git submodule sync
  10
  11 if [ "$1" = "pull" ]; then
  12     # Fetch & pull any new updates from submodule's origin
  13     # [http://scribu.net/blog/git-alias-for-updating-submodules.html]
  14     git submodule foreach 'git fetch origin --tags; git checkout master; git pull'
  15 fi