long running process bash monitoring process PID and time

neverend.bash

#!/usr/bin/env bash

#
# Create a long running process which may be used for experimentation
#

#
# check how long a process is running in seconds
# ps -p <PID> -o etimes=
#
# generic
# ps -p <PID> -o pid,comm,etime
#
# pgrep --full <process name>
#

#
# note : this implimentation has no support yet for catching interupts / signals
#

total_run_time_seconds=0
while true; do
  echo "PID $$"
  echo "Running... press Ctrl+C to stop"
  sleep 60
  total_run_time_seconds=$((total_run_time_seconds + 60))
  echo "    Running for $total_run_time_seconds"
done