Update Pressflow

gopressflow.sh

#!/bin/bash
#
# Upgrades/Installs Pressflow over your Drupal installation
#
# * Must be run from your Drupal root directory
# * Backup your files before doing anything!
# * e.g. run: ./gopressflow.sh 6.38.121
#
# You can get the exact release version from https://github.com/pressflow/6/releases
#
# Credit: https://github.com/kriskhaira/drupalkit
#

if [ -n "$1" ]; then
  curl -C - -O "https://codeload.github.com/pressflow/6/tar.gz/pressflow-$1"
  tar -zxvf "pressflow-$1"
  rm "pressflow-$1"
else
  echo "You must specify a Pressflow release version. (e.g. 6.38.121. See https://github.com/pressflow/6/releases)"
  exit 1
fi

mv "6-pressflow-$1" pressflow
mv "6-pressflow-$1/*.txt" ./
mv "6-pressflow-$1/*.php" ./
mv "6-pressflow-$1/.htaccess" ./

rsync -avzpP --delete pressflow/includes ./
rsync -avzpP --delete pressflow/misc ./
rsync -avzpP --delete pressflow/modules ./
rsync -avzpP --delete pressflow/profiles ./
rsync -avzpP --delete pressflow/scripts ./
rsync -avzpP pressflow/sites ./
rsync -avzpP --delete pressflow/themes ./

rm -rf pressflow

drush cache-clear all