Fix D7 file permissions

d7_fixperms.sh

#!/bin/sh

PERM_USER=nobody
PERM_GROUP=dev
APACHE_USER=apache

if [ $# -ne 1 ] ; then
  echo "USAGE $0 <d7 root dir>"
  exit;
fi

# set all files to 664 permissions
find $1 -type f -exec chmod 664 {} \;

# set all directories to 775 permissions
find $1 -type d -exec chmod 775 {} \;

# change owner to nobody and group to dev for everything in the webroot
# directory then change sites/default/files owner to apache
chown -R $PERM_USER:$PERM_GROUP $1; chown -R $APACHE_USER $1/sites/default/files;

Wonderful!