cu -l /dev/cuaU0 -s 115200

Not sure where to ask this but I want to compare a serial connection to a device using FreeBSD and Arch Linux and would like to perform the Arch Linux equivalent of cu -l /dev/cuaU0 -s 115200 but can't figure out how. Any suggestions? Arch Linux does not seem to have a cu command.
Try using comms/minicom. It's usually also available on Linux.

If you've ever used the old MS-DOS Telix application it should look very familiar.
It's about 30 years ago since I used Telix and memories fade, but thanks for pointing out comms/minicom since I can use the same program on both FreeBSD and Arch Linux. I'm surprised there is no cu on Arch Linux though...