open-here - for use with uxrvt and x11. will open a terminal in the same directory as the terminal you have focused

gistfile1.txt

#!/bin/bash

# Get the focused window ID
ID=$(xdpyinfo | grep focus | cut -f4 -d " ")
# Get the SHELL id
PID=$(xprop -id "$ID" | grep -m 1 PID | cut -d " " -f 3)
# get the TERM id that is running the SHELL
TERM_ID=$(pgrep -P "$PID")

# if there is a current working directory navigate to it
if [ -e "/proc/$TERM_ID/cwd" ]; then
    urxvt -cd "$(readlink "/proc/${TERM_ID}/cwd")" &
else
    urxvt
fi