Nmon spreadsheet output, hourly rotation

I need the infinite while loop for make sure Nmon is running.

I had found that sometime Nmon stopped itself with no reason and I have lost all stat for that hour.

#!/bin/bash
  
# hourly rotatation
# nmon help
# -f            spreadsheet output format [note: default -s300 -c288]
# -s <seconds>  between refreshing the screen [default 2]
# -c <number>   of refreshes [default millions]
# -t            spreadsheet includes top processes
           
           
cd $(dirname 0)
nmon -ft -s 1 -c 3600 -m $PWD
sleep 1
while true
do
if pgrep -u $(whoami) -f "nmon -ft -s 1 -c 3600 -m $PWD" &>/dev/null
 then
         echo "Nmon is running"
 else
         echo "Nmon is NOT running, restart Nmonx"
         #nmon -ft -s 1 -c 3600 -m $PWD
 fi
sleep 1
done

That is all.