update-module

#!/bin/bash
#
# Usage:  ./update-module path-to-new-module path-to-drupal-root
# Ex:     ./update-module ~/drupal-module-updates/moduleName ~/public_html
#
# Assumes that last element of path-to-new-module is folder name that is
#   identical to module's folder name under path-to-drupal-root/sites/all/modules
#
# Uses rsync to update <drupal_root>/sites/all/modules/<module_name>
#   - will delete files in .../sites/all/modules/module_name that don't exist in new version
#   - will not copy files that are the same in both places.
#   - will copy files that are in new module but not under old version
#
# Warning: Will blow away any local changes -- that is, assumes that whatever is downloaded as 
#    module-name.tgz is complete.
#  see http://thedrupalblog.com/updating-drupal-module-subversion-integrated-filesystem-using-rsync

print_usage_and_exit () {
  echo "Usage: `basename $0` path_to_new_module path_to_drupal_root"
  echo "   Ex.: `basename $0` ~/module-updates/my_module ~/public_html"
  exit 65
}

if [ $# -ne 2 ]
then
  echo "wrong number of arguments"
  print_usage_and_exit
fi

cwd=`pwd`
newmod_path=$1
root_path=$2

# simple validity check
if [ ! -e ${root_path}/sites/default/settings.php ]
then
  echo "${root_path} does not look like a drupal installation."
  print_usage_and_exit
fi

modname=`basename $newmod_path`
echo "updating module ${modname}..."

# -a = archive (recursive, links, preserve permissions, preserve times, preserve group, preserve owner, specials
# -v = verbose, -c = checksum-based, -C = auto-ignore
rsync -avcC --delete ${newmod_path}/ ${root_path}/sites/all/modules/${modname}/
echo "don't forget to commit"
exit 0