pkg is the package manager on FreeBSD and can be used to install applications.
pkg will be automatically bootstrapped the first time you use it. When your jail was created the
pkg configuration files were changed to use the Point Park
Installing an application is as simple as running
sudo pkg install application
where application should be replaced with the name of the software you would like to install. Most other tutorials make use of
pkg and you can simply follow those instructions.
If you are looking for an application but do not know the exact name or version, you could search for it, for example
pkg search php
will list all the packages with php in the name.
Finally, it is important to keep your packages up to date. To check for security vulnerabilities you can run
sudo pkg audit -F
If there is a vulnerability, you should update your packages (assuming the vulnerability is fixed in the repository). First, update the repository
sudo pkg update
then upgrade your packages
sudo pkg upgrade
Finally, you should restart your services because they may have been upgraded (note that it is even better to stop the services before upgrading and restart them after the upgrade is completed):
sudo service -R
For more information, check the man page: