1) Before uninstall an older GCALDaemon version, you should
   archive the 'GCALDaemon/work' directory. If the new GCALDaemon
   installation finishes, you can restore the previous 'work' directory.

2) Unpack the distribution ('GCALDaemon' directory)
   under the '/usr/local/sbin' directory, as root.

   cd /usr/local/sbin
   unzip /downloads/gcaldaemon-linux-1.x.zip
   chgrp -R groupname /usr/local/sbin/GCALDaemon
   chmod -R g+w /usr/local/sbin/GCALDaemon
   chmod 755 /usr/local/sbin/GCALDaemon/bin/*.sh

3) Read documentation and modify configuration files
   in '/usr/local/sbin/GCALDaemon/conf' folder.

4) Launch '/usr/local/sbin/GCALDaemon/bin/standalone-start.sh' script

5) Optionally put GCALDaemon into 'init', 'launchd' or 'rc' script