chpwd() {
    if [[ "$TERM" == "screen.linux" || "$TERM" == "screen" ]]; then
        echo -ne "\ek"`pwd | grep -o "[^/]*/[^/]*$"`"\e\\"
    fi
}

preexec() {
    if [[ "$TERM" == "screen.linux" || "$TERM" == "screen" ]]; then
        echo -ne "\ek"$1"\e\\"
    fi
}

precmd() {
    chpwd
}