Shell file for mounting an encfs volume in OSX by using the keychain password

mount.sh

#!/bin/bash
target=/Volumes/tmp.mytarget
source=/Users/bla/Dropbox/encrypted
volname=EncodedDropbox
keychainPassword=encodedDropbox

mount | grep $target >/dev/null
[[ "$?" -eq "0" ]] && diskutil umount force $target

if [ ! -d $target ]
  then
    mkdir $target
    chmod 0700 $target
fi

extpassCall="security 2>&1 > /dev/null -q find-generic-password -ga '$keychainPassword' | cut -d \\\" -f 2"

if [ -d $source ]
	then
		encfs $source $target --extpass="$extpassCall" -olocal -oallow_other -ovolname=$volname
	else
		echo "'$source' not available"
fi