#!/bin/sh

trap cleanup 1 2 3 6 9 11 13 15

cleanup() {
    doas umount /mnt
    mount | grep mnt
}

usage() {
    echo "usage: $(basename "$0") sd1"
    dmesg |grep ^sd1 | tail -n2
    dmesg |grep ^sd2 | tail -n2
    dmesg |grep ^sd3 | tail -n2
    dmesg |grep ^sd4 | tail -n2
    exit 0

}

[ -z "$1" ] && usage

doas mount_msdos /dev/$1i /mnt/
nnn /mnt/
cleanup