tldr/pages/linux/setserial.md

setserial

Read and modify serial port information. More information: https://manned.org/setserial.

• 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 ...}}