we are looking for a way to point our Apache DocumentRoot to a symlink. E.g. DocumentRoot /var/www/html/finalbuild
finalbuild should point to a folder somewhere like /home/user/build3
when we move a new build to /home/user/build4 we want to use a shell script that changes the symbolic link "finalebuild" to this new directory /home/user/build4 and do an apache graceful restart to have a new web application version up and running with little risk.
What's the best way to create this symlink and to change this link afterwards using the shell script?