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 # Change to root directory
   6 cd $(git rev-parse --show-toplevel)
   7
   8 # Ensure all submodules (and child submodules) are checked-out
   9 git submodule update --init --checkout --recursive
  10
  11 # Update submodules' remotes based on .gitmodules
  12 git submodule sync
  13
  14 # Forcibly update each submodule's "master" branch to be the current revision
  15 # in case HEAD is detached (e.g. due to "git submodule update --checkout")
  16 git submodule foreach --recursive 'git checkout --quiet -B master'
  17
  18 if [ "$1" = "pull" ]; then
  19     # Fetch & pull any new updates from submodule's origin (but *NOT* any child
  20     # submodule updates -- those should come from the submodule proper)
  21     git submodule foreach 'git-up origin'
  22 fi