automatic screen creation/reconnection from .bash_profile

screen_reattach.bash

# a quick and dirty little hack: never get screwed by the fact that you forgot to 
# run "screen" on a remote host ever again!  
#
# put this into your .bash_profile at the very end, or in a separate file and source
# it (again as the last action) from .bash_profile.


if [ "$TERM" != "screen" ]; then
  output=$(screen -ls | grep ached)
  screens=($(echo "$output" | awk '{print $1}'|xargs))
  statuses=($(echo "$output" | awk '{print $2}'|xargs))

  numscr=${#screens[@]}

  if [ ${numscr} -gt 0 ]; then
    n=0
    echo
    echo There are existing screen sessions:
    echo
    while [ $n -lt $numscr ]; do
      echo "[$n] ${screens[$n]} ${statuses[$n]}"
      n=$(($n+1))
    done
    echo
    read -p "Select an existing screen or hit enter to start a new one. " ANSWER
    if [ -z "$ANSWER" ]; then
      exec screen
    else
      exec screen -DDRR ${screens[$ANSWER]}
    fi
  else
    exec screen
  fi

fi