pistar-mmdvm-log-backup-age

#!/bin/bash
# Age MMDVM log file backups
#
xro=$(grep "/dev/root" /proc/mounts | sed -n "s/.*\(r[ow]\).*/\1/p")
#rpi-rw
if [ "$xro" == "ro" ]; then
  sudo mount -o remount,rw / # sudo mount -o remount,rw /boot
fi
#
file=/home/pi-star/.mlogs
m0=14                             # number to be kept
if [[ $1 =~ [0-9] ]]; then
  m0=$1
fi
m1=$(ls ${file}/MMDVM* | wc -l)   # total number of files
m2=$(expr ${m1} - ${m0})          # number to be deleted
if [ ${m2} -gt 0 ]; then
  filed=$(ls -tr ${file}/MMDVM* | head -n ${m2})
  for f in ${filed}; do
#   echo $f
    sudo rm $f
  done
  filed=$(find ${file}/re* -mtime +${m0})   # del related reboot/restore msgs
  for f in ${filed}; do
#   echo $f
    sudo rm $f
  done
else
  m2=0
fi
logger -t "[$$]" "Pi-Star --> MMDVM log backups aged: $m2 files <--"
#
#rpi-ro
if [ "$xro" == "ro" ]; then
  sudo mount -o remount,ro / # sudo mount -o remount,ro /boot
fi