I have installed canvas LMS with the help of bitnami installer.
The application is accessible on port 8080.
I would like to change on port 80.
Thank you for using Bitnami. Please note that changing Apache to use the 80 port instead of the 8080 one will require to perform a big amount of changes as it requires admin privileges to use that new port. I suggest you install the application again using sudo privileges and then migrate the data from the old installation to the new one. In order to perform that migration, I suggest you ask in the forums of the application to get more information about it.