FreeBSD cvsup: Update The FreeBSD From Previous Releases Using Source Code

To update a FreeBSD system to a newer release using the cvsup utility, you will need to do the following:

1. Install the cvsup utility on your FreeBSD system. You can install cvsup using the pkg package manager:

# pkg install cvsup-without-gui

2. Create a configuration file for cvsup. The configuration file specifies the location of the source code repository and the files you want to update. To create the configuration file, you can use the csup utility to generate a template configuration file. Run the following command to create the template configuration file:

# csup -g -h cvsup.FreeBSD.org /usr/share/examples/cvsup/standard-supfile

This will create a file named standard-supfile in the /usr/share/examples/cvsup directory. You can then edit this file to specify the version of FreeBSD you want to update to, and any other options you want to use.

3. Run cvsup to update the source code using the configuration file you created in step 2. The syntax for the cvsup command is:

cvsup -g -L 2 /path/to/configuration/file

Replace /path/to/configuration/file with the path to the configuration file you created in step 2.

4. Compile and install the updated source code. After cvsup has finished updating the source code, you will need to compile and install the updated source code using the make utility. First, switch to the source code directory:

# cd /usr/src

Then, run the following commands to compile and install the updated source code:

# make buildworld
# make buildkernel KERNCONF=YOUR_KERNEL_CONFIGURATION
# make installkernel KERNCONF=YOUR_KERNEL_CONFIGURATION
# reboot
# make installworld
# mergemaster -p
# reboot