batocera-maintenancelisted

# Batocera Maintenance Keeping the cabinet healthy: running things at boot and on a schedule, backing up what matters, and surviving version upgrades. Assumes the connection pattern and filesystem model from `batocera-ops`. ## There is no crond — use a boot service Batocera does **not** run a general-purpose `crond`. Don't write a crontab and assume it fires; it won't. The mechanism for "run this at boot / on a schedule" is a **boot service**. Since v43, the entry point is `/userdata/system/services/custom_service` (it replaced `/userdata/system/custom.sh`; the upgrade auto-converts an existing `custom.sh`). A service is a script Batocera runs at boot with a `start` argument. Enable/inspect services: ```bash SSHB "batocera-services list" SSHB "cat /userdata/system/services/custom_service" ``` ### Scheduling without cron: the boot-loop pattern To run something periodically, the service launches a background loop that sleeps and re-checks. This is how the cabinet does hourly/daily/monthly work with no cron: ```bash # inside custom_service, on the 'start' case: ( while true; do # hourly re-assert (e.g. CPU governor; see batocera-tuning) /etc/init.d/S18governor start 2>/dev/null # once-a-day / once-a-month gating: compare a stamp file to `date` stamp=/userdata/system/.last-monthly-backup if [ "$(cat "$stamp" 2>/dev/null)" != "$(date +%Y-%m)" ]; then /userdata/system/tools/backup-to-remote.sh && date +%Y-%m > "$stamp" fi sleep 3600 d