#!/bin/bash

mapfile -t devs < <(
    /bin/ls -l /sys/class/tty |
        sed -ne '
            /\/virtual\//d;
            s@^.* \(tty[^ ]\+\) -> .*@\1@p
        '
)
ans=yes hfile=/usr/include/asm-generic/termbits.h
mapfile -t bauds < <(
    sed -nr 's/^#define\s+B([0-9]{2,})\s+.*/\1/p' <$hfile
)
for tty in ${devs[@]};do
    echo "[ $tty ]"
    column < <(
        for rate in ${bauds[@]};do
            stty -F /dev/$tty $rate &>/dev/null
            printf '%8d %-3s\n' $rate ${ans[$?]:-no}
        done
    )
done