comms/lrzsz including rz and sz command, in linux just install lrzsz then you can upload files to filesystem. But freebsd output root@generic:/home/freebsd # rz -E rz: Command not found. root@generic:/home/freebsd # 0000 root@generic:/home/freebsd # rz rz: Command not found. It semms that only lrz command not rz. XShell supports rz command not lrz.
The sources builds only the binaries with "l" prefix. a) you can define aliases in your preferred shell b) you can create links for the sorter names. The ports does not do this for you. This conflicts with other applications like textproc/jade.