############################################
#  Program 6
#  by Gary C. Miller, 11/28/07
#
############################################
#
#  The command: ps -ef          list all processes
#  The command: sed 's/ *//'    removes the leading spaces
#  The command: cut '-d ' -f1   cuts out the first field
#  The command: sort -u         does a unique sort
#  The command: grep -v UID     allows for everything except for UID
#  The command: wc -l           counts the number of lines
#
echo -n "Number of Users: "
ps -ef | sed 's/ *//' | cut '-d ' -f1 | sort -u | grep -v UID | wc -l

cnt=0
userlist=""
for user in `ps -ef | sed 's/ *//' | cut '-d ' -f1 | sort -u | grep -v UID` ; do
  cnt=`expr $cnt + 1`
  if [ $cnt -eq 1 ] ; then userlist="$user"
  else                     userlist="${userlist}, $user"
  fi
done
echo "User Names: $userlist"
#
#  For each user
#
totalnbrprocesses=0
for user in `ps -ef | sed 's/ *//' | cut '-d ' -f1 | sort -u | grep -v UID` ; do
  echo "*********************"
  echo "User: $user"
  nbrprocesses=`ps -u $user | grep -v PID | wc -l`
  echo "Number of Processes: $nbrprocesses"
  totalnbrprocesses=`expr $totalnbrprocesses + $nbrprocesses`
  processlist=""
  cnt=0
  for process in `ps -u $user -o args | grep -v COMMAND` ; do
    cnt=`expr $cnt + 1`
    if [ $cnt -eq 1 ] ; then processlist="$process"
    else                     processlist="${processlist}, $process"
    fi
  done
  echo "Process List: $processlist"
done
echo "*********************"
echo "Total Number of User Processes: $totalnbrprocesses"