I need to make a script which does the following:
- Display users logged on
- Which sessions open
- What they are doing atm.
- To which group they belong
- How long they are active or not

This is what I got now:

 
  echo " " 
  echo Number of sessions:
  ps v | grep "pts" | awk '{ print $2 }' | wc -l   <------------ this is not ok yet
   
  echo " "
   
  echo "Most Frequent Process:  "
  ps -ef | awk '{ print $1 $8 }' | uniq -c | sort -r | nl | awk '{ print $1 " "  $3 }' | grep "^1 " | awk '{ print $2}'