Update readme.md

bskybackup.deno.js

@@ -86,12 +86,16 @@ async function backupRecursive(dids, depth = 1) {
 	}
 	var allrdids = new Set();
 	for (var did of dids) {
-		var repo = await backup(did);
-		repo = ascii.decode(repo);
-		var rdids = new Set(repo.match(/did:plc:[a-z2-7]{24}/g));
-		rdids.delete(did);
-		console.log(`${rdids.size} related didplcs`);
-		rdids.forEach(rdid => allrdids.add(rdid));
+		try {
+			var repo = await backup(did);
+			repo = ascii.decode(repo);
+			var rdids = new Set(repo.match(/did:plc:[a-z2-7]{24}/g));
+			rdids.delete(did);
+			console.log(`${rdids.size} related didplcs`);
+			rdids.forEach(rdid => allrdids.add(rdid));
+		} catch (error) {
+			console.error(error);
+		}
 	}
 	await backupRecursive(allrdids, depth - 1);
 }

readme.md

@@ -20,4 +20,33 @@ $ deno run --allow-all bskybackup.deno.js did:plc:u4gngygg2w5egsigxu5g7byu --dep
 
 This will additionally save all profiles related to the profiles related to them, so you will have a copy of everything their friends liked and reposted as well. This may be a LOT of data!
 
-Running the script again will refresh the repositories and download new blobs. Existing blobs are not re-downloaded.
+Running the script again will refresh the repositories and download new blobs. Existing blobs are not re-downloaded. Run the script regularly to keep the backups up to date.
+
+## Example SystemD
+
+systemd timer is better than cron because it won't start it again if it's still running.
+
+/etc/systemd/system/bskybackup.service
+```systemd
+[Unit]
+Description=Bluesky Backup script
+After=network-online.target
+
+[Service]
+WorkingDirectory=/zpool1/FileStorage/srv/bskybackup/
+User=bskybackup
+ExecStart=deno run --allow-all bskybackup.deno.js did:plc:u4gngygg2w5egsigxu5g7byu
+Type=exec
+```
+
+/etc/systemd/system/bskybackup.timer
+```systemd
+[Unit]
+Description=Daily Bluesky backup
+
+[Timer]
+OnCalendar=05:00:00
+
+[Install]
+WantedBy=timers.target
+```