install_eon_purge_data_shutdown.sh

#!/bin/env bash
set -e

# create purge script
mkdir -p /data/local
cat <<'EOF' > /data/local/purge-data.sh
#!/bin/sh
set -e

# OP is disabled if free space is less than 15%
MAX_USED_PERCENT=70

# update $PATH to contain all the binaries we need access to when running from cron
PATH=/data/data/com.termux/files/usr/bin:/data/data/com.termux/files/usr/bin/applets:$PATH

echo -e "\t\tUsed\tMax"
# delete oldest entries until we are under the $MAX_USED_PERCENT limit
while true; do
  # get the used space on the device
  USED_PERCENT=$(df -h /data/media/0/realdata | tail -1 | awk '{print $5}' | sed 's/%$//')

  # check if the available space is lower than the max allowed
  if [[ USED_PERCENT -gt MAX_USED_PERCENT ]]; then
    echo -e "Deleting\t${USED_PERCENT}%\t${MAX_USED_PERCENT}%"
    # TODO: prioritize deleting driver monitoring videos first
    find /data/media/0/realdata/* -type f -not -name 'rlog.bz2' -print0 2>/dev/null | \
      xargs -r -0 ls -tr 2>/dev/null | \
      head -1 | \
      xargs rm -rf
  else
    echo -e "Complete\t${USED_PERCENT}%\t${MAX_USED_PERCENT}%"
    break
  fi
done

# delete empty directories
# find doesnt have -empty param so we have to use shell
find /data/media/0/realdata/* -type d -exec bash -c \
  'shopt -s nullglob; shopt -s dotglob; \
  a=("$1"/*); [[ ${a[@]} ]] || printf "%s\n" "$1"' sh {} \; 2>/dev/null | \
  xargs -r rmdir
  
# shutdown if done uploading or wifi down
BATTERY_STATUS=`cat /sys/class/power_supply/battery/status`
NETWORK_STATUS=`cat /sys/class/net/wlan0/operstate`
FILE_COUNT=$(ls /data/media/0/realdata | wc -c)
if [ “$BATTERY_STATUS” = “Discharging” ] && [ “$FILE_COUNT” = “0” ]; then
reboot -p
elif [ “$BATTERY_STATUS” = “Discharging” ] && [ “$NETWORK_STATUS” != “up” ]; then
reboot -p
fi
EOF
chmod 0755 /data/local/purge-data.sh

# create cron job to run every 10 minutes.
mkdir -p /data/local/crontab
echo '*/10 * * * * /data/local/purge-data.sh' > /data/local/crontab/root

# install crond into userinit
cat <<EOF > /data/local/userinit.sh
#!/bin/env sh

/data/data/com.termux/files/usr/bin/applets/crond -b -c /data/local/crontab
EOF
chmod 0755 /data/local/userinit.sh

# cleanup previous versions
if [[ -f /system/etc/init.d/crond ]]; then
  mount -o rw,remount /dev/block/bootdevice/by-name/system /system
fi

rm -rf \
  /data/cleardata \
  /data/crontab \
  /system/etc/init.d/crond

if grep '\srw[\s,]' /proc/mounts | grep -q '\s/system\s'; then
  mount -o ro,remount /dev/block/bootdevice/by-name/system /system
fi

echo 'Install complete! Please reboot to start crond.'

I haven't looked into this further. You are correct with the new NEOS that V0.6 uses you can no longer run cron jobs. I have not tracked down why though. The script itself still functions but it does not seem to run as a cron job anymore. In Discord a guy from comma.ai just said that its not needed anymore since openpilot automatically cycles and overwrites old videos when it gets full and now has better power management.
…
On Wed, Jul 24, 2019 at 5:03 PM Steven An @.***> wrote: install via curl curl -sL https://gist.githubusercontent.com/castillo-luis/adf461e15e00f2c6e1c88de9759f5ec9/raw/453e1c401810ff61dcc55e91944546288008d4a3/install_eon_purge_data_shutdown.sh | bash — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://gist.github.com/adf461e15e00f2c6e1c88de9759f5ec9?email_source=notifications&email_token=AK6ZSODE3MSG2GTNZ3UEFO3QBDGTJA5CNFSM4IGNDE22YY3PNVWWK3TUL52HS4DFVNDWS43UINXW23LFNZ2KUY3PNVWWK3TUL5UWJTQAFV4GU#gistcomment-2979946, or mute the thread https://github.com/notifications/unsubscribe-auth/AK6ZSOD4ZSPW2PWULYSD773QBDGTJANCNFSM4IGNDE2Q .

Hm I see....I agree that basically deleting old video files arent necessary anymore, but I really liked the shutdown script, despite power management being improved, I don't see how it could surpass turning the device off as soon as power to the car and wifi are disconnected. Can you think of any other way to facilitate an auto shutdown feature without using cron jobs? I've been looking myself but can't seem to figure anything out :/ I really liked your script haha