very simple screen unique session for linux admin

goscreen

#!/bin/bash

SCREEN='/usr/bin/screen'

if [ $# -eq 0 ]; then
    echo "goscreen <session filter>"
    exit 1
fi

PID=`$SCREEN -ls | grep $1 | cut -d. -f1`

if [ -z "$PID" ]; then
  echo "Starting new screen session named $1"
  screen -S $1
else
  echo "Reattaching to existing named session (in shared mode) $1"
  screen -r -x $PID
fi