#! /bin/bash
[ ! -r "$1" ] && {
    echo "Usage: $0 <input file>" >&2
    return 1
}
TEMP_FILE=$(mktemp --tmpdir -u "$(basename "$1").XXXXXX.html")
pandoc "$1" > "$TEMP_FILE"
x-www-browser "$TEMP_FILE"
sleep 2
/bin/rm "$TEMP_FILE"