Add backup script

service_files/how_to.md

@@ -1,4 +1,5 @@
 - Symlink service file to `/etc/systemd/system/podracer.service`
-- Create `/etc/podracer/config`
+- Create `/etc/podracer/config` and change ownership
 - Symlink rocket config to `/etc/podracer/config/Rocket.toml`
 - Symlink binary to `/usr/local/bin/podracer`
+- Symlink web stuff to `/etc/podracer/config/server/web`

service_files/podcast_backup.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+if [[ "$#" -lt "2" ]]; then
+    echo "Error: need destination and port"
+    exit 1
+fi
+
+dest="$1"
+port="$2"
+
+podcast_dir="/etc/podracer/podcasts"
+
+# Zip up podcast dir
+tmp_dir="$(mktemp -d)"
+bak="$tmp_dir/podcast.bak.zip"
+zip -r "$bak"  "$podcast_dir"
+
+# Push that zip to the backup location
+echo "Pushing $bak to $dest on port $port"
+scp -P $port "$bak" "$dest"