I have installed CakePHP 2.0 framwork using steps below:
1. Start the terminal
2. sudo mkdir /var/www/cakephp
3.sudo cp -r ~/cakephp/* /var/www/cakephp
As a temporary fix, if you want to use the provided .env file and permissions did not solve your issue modify the .env file to use absolute path that points to your app directory
export CACHE_FOLDER="/var/www/absolute_path_to_my_cakephp_app/"
export CACHE_DURATION="+2 minutes"
export CACHE_DEFAULT_URL="file://${CACHE_FOLDER}tmp/cache/?prefix=${APP_NAME}_default&duration=${CACHE_DURATION}"
export CACHE_CAKECORE_URL="file://${CACHE_FOLDER}tmp/cache/persistent?prefix=${APP_NAME}_cake_core&serialize=true&duration=${CACHE_DURATION}"
export CACHE_CAKEMODEL_URL="file://${CACHE_FOLDER}tmp/cache/models?prefix=${APP_NAME}_cake_model&serialize=true&duration=${CACHE_DURATION}"