For example, you need to change a port in FreeBSD in order to fix or add something to the program, you can do this by downloading and unpacking the ports into the system with the following commands:
Or you can update the ports
You can also use a single command
The next step is to go to the ports folder and look, then download the source code:
At the MASTER_SITES= line you will find the path to the archive with the code you want to download
After you have downloaded the archive, unpack it somewhere, change the code as you want and rearchive it with the same name.
To build the modified port you need to know its checksums and file size:
Then edit the file distinfo with the correct checksums and size:
SHA256 (edit.tar.gz) = 2b45ced81fe460f984444e28d9a283e6f1c67c97d4a293dd026aee013d330c9c
SIZE (edit.tar.gz) = 24505
To build the port run the following command
make MAKE_JOBS_UNSAFE=yes install
If we get any bugs, correct them in the code and go through the whole process again.
BSD is so easy and fun.