Update with karen

bin/update/README.md

@@ -36,13 +36,13 @@ How over-the-air updates work on Umbrel.
 
 11. `umbrel-dashboard` then alerts the user regarding the new update, and after the user consents, it makes a `POST` request to `umbrel-manager` to start the update process.
 
-14. `umbrel-manager` creates a signal file on the mounted host OS volume (`$UMBREL_ROOT/signals/update`) with the version `X.Y.Z`, and returns `200 OK` to the `umbrel-dashboard`.
+14. `umbrel-manager` creates a signal file on the mounted host OS volume (`$UMBREL_ROOT/events/signals/update`) with the version `X.Y.Z`, and returns `200 OK` to the `umbrel-dashboard`.
 
-15. [`fswatch`](https://github.com/emcrisostomo/fswatch), a file monitoring tool that's continuosly monitoring the `$UMBREL_ROOT/signals/update` file notices the change, and immeditaly runs [`$UMBREL_ROOT/bin/update/start.sh`](https://github.com/mayankchhabra/umbrel/blob/ota-updates/bin/update/start.sh) as root.
+15. [`karen`] is triggered (obviously) when `$UMBREL_ROOT/events/signals/update` is touched/updated file, and immeditaly runs the update trigger [`$UMBREL_ROOT/events/triggers/update`](https://github.com/mayankchhabra/umbrel/blob/ota-updates/events/triggers/update) as root.
 
-16. `$UMBREL_ROOT/bin/update/start.sh` clones release `vX.Y.Z` from github in `/tmp/umbrel-vX.Y.Z`.
+16. `$UMBREL_ROOT/events/triggers/update` clones release `vX.Y.Z` from github in `/tmp/umbrel-vX.Y.Z`.
 
-17. `$UMBREL_ROOT/bin/update/start.sh` then executes all of the following update scripts from the new release `/tmp/umbrel-vX.Y.Z` one-by-one:
+17. `$UMBREL_ROOT/events/triggers/update` then executes all of the following update scripts from the new release `/tmp/umbrel-vX.Y.Z` one-by-one:
 
 - [`/tmp/umbrel-vX.Y.Z/bin/update/00-run.sh`](https://github.com/mayankchhabra/umbrel/blob/ota-updates/bin/update/00-run.sh): Pre-update preparation script (does things like make a backup)
 - [`/tmp/umbrel-vX.Y.Z/bin/update/01-run.sh`](https://github.com/mayankchhabra/umbrel/blob/ota-updates/bin/update/01-run.sh): Install update script (installs the update)

bin/update/start.sh → events/triggers/update

@@ -1,8 +1,9 @@
-#!/bin/bash -e
+#!/usr/bin/env bash
+set -euo pipefail
 
 UMBREL_ROOT=$(dirname $(readlink -f ../../$0))
 # UMBREL_ROOT=/home/umbrel
-RELEASE="v$(cat $UMBREL_ROOT/signals/update)"
+RELEASE="v$(cat $UMBREL_ROOT/events/signals/update)"
 UMBREL_USER=umbrel
 
 if [ $(whoami) != 'root' ]; then
@@ -17,7 +18,7 @@ echo "========== Stage: Download ============"
 echo "======================================="
 echo
 
-if [ -z $(grep '[^[:space:]]' $UMBREL_ROOT/signals/update) ]; then
+if [ -z $(grep '[^[:space:]]' $UMBREL_ROOT/events/signals/update) ]; then
     echo "Empty update signal file. No release version not found."
     exit 1
 fi
@@ -61,7 +62,7 @@ echo "Deleting cloned repository"
 [ -d /tmp/umbrel-$RELEASE ] && rm -rf /tmp/umbrel-$RELEASE
 
 # echo "Deleting update signal file"
-# rm -f $UMBREL_ROOT/signals/update
+# rm -f $UMBREL_ROOT/events/signals/update
 
 echo "Removing lock"
 rm -f $UMBREL_ROOT/statuses/update-in-progress