#!/bin/bash

do_config()  {
graph=(          2            # number of graphs.
   label  draw  colour        # graph setup
   logins AREA  40ff40        #   1st graph setup data
   users  LINE2 ff0080        #   2nd graph setup data
)

cat << EOF
graph_title Users Online
graph_vlabel Number of users and logins
graph_category system
graph_args --base 1000 -l 0
graph_scale no
EOF

# can go into an include file
labels=$((${#graph[*]}/(graph+1)))
for ((i=0; i<graph; i++)); do
   for ((j=0; j<labels; j++)); do
      conf=$((i*labels+labels+1))
      echo "${graph[conf]}.${graph[j+1]} ${graph[conf+j]}"
   done
done
}

do_fetch()  {
   echo "logins.value $(who | wc -l)"
   echo "users.value $(who | sed 's/ .*//' | sort -u | wc -l)"
}

do_${1:-fetch}
exit 0