setserial
Read and modify serial port information.
TLDR
Print all information about a specific serial device
$ setserial -a [/dev/cuaN]
Print the configuration summary of a specific serial device (useful for printing during bootup process)
$ setserial -b [device]
Set a specific configuration parameter to a device
$ sudo setserial [device] [parameter]
Print the configuration of a list of devices
$ setserial -g [device1 device2 ...]
