I have a serial port on my system which is named cuau3 under FreeBSD. I want to change the properties of this port, I can change the device's speed using /etc/ttys and /etc/gettytab files, but I can't change other properties e.g. parity, stopbits, etc ... . I've added the following entry to the /etc/gettytab file :test.std.115200:\:ep:sp#4800:tc:PcAnd also I've changed /etc/ttys filecuau3   /usr/libexec/getty test.std.115200    cons25  on secureI expect the /dev/cuau3 device to use even parity and a speed of4800, but when I check the device properties using stty -f /dev/cuau3, only the speed changes to 4800 and the parity value doesn't change.Here's the output of stty -f /dev/cuau3 after applying the changes using kill -HUP 1 command.speed 4800 baud;lflags: -icanon -isig -iexten -echoiflags: -icrnl -ixon -ixany -imaxbel -brkintoflags: -opost tab3cflags: cs8 -parenb
FreeBSD gettytab configuration
freebsd;tty;serial console