#! /usr/bin/env bash
 
 # This script rejoins an existing screen, or re-creates a
 # screen session from a previous run of stack.sh.
 
 TOP_DIR=`dirname $0`
 
 # if screenrc exists, run screen
 if [[ -e $TOP_DIR/stack-screenrc ]]; then
     if screen -ls | egrep -q "[0-9].stack"; then
         echo "Attaching to already started screen session.."
         exec screen -r stack
     fi
     exec screen -c $TOP_DIR/stack-screenrc
 fi
 
 echo "Couldn't find $TOP_DIR/stack-screenrc file; have you run stack.sh yet?"
 exit 1