#!/usr/bin/env python
import os, sys
import subprocess

HOST_MOUNT_DIR = '\$HOME/ubuntu'

# get the ip of the host
host = os.environ['SSH_CLIENT'].split(' ')[0]

# get the path from $HOME to the file
file_path = os.path.relpath(os.path.abspath(sys.argv[1]),
                            os.path.expanduser('~'))

# get the path from to the file on the host filesystem
remote_path = os.path.join(HOST_MOUNT_DIR, file_path)

# we're going to use the default editor on the host
args = '/usr/bin/ssh %s "\$EDITOR %s"' % (host, remote_path)
print args
subprocess.Popen(args, shell=True)