EDIT

#!/bin/bash 

#

# update the symlink for the stable folder

#

##############################################################

# NOTE: the ssh host should be configured in the ~/.ssh/config:

#     Host edit-deploy

#     HostName <ip ot host name>

#     User <deployment-user>

# 

# At the server to be delpoyed to you need to setup and configure the 

# 1. crate the <deployment-user> 

#

# 2. assuming you are logged in as the <deployment-user>:

#

#  echo "umask 0126" >> ~/.bashrc : 

#   

# 3. user 'www-data' must be member of the group of the <deployment-user>

#

# 4. The permissions of the folders to delpoyed to must be set to 775 ownership must be adjusted:

#   chmod -R 775 <the folders>

#   chown -R www-data:deploy <the folders> 

# 

#  

if [ -n "$PROJECT_VERSION" ]; then

 ssh $SSH_HOST "ln -s /var/www/download/cdmserver/$PROJECT_VERSION /var/www/download/cdmserver/stable"