x0r

DevOps | Cloud | Cyber-security enthusiast | CTF player.

[Anatoli Kopadze @AnatoliKopadze]

the engineer who built Claude Code just dropped a 28-minute video on how to write prompts that actually work

I've seen $300 courses that don't cover what he shows in the first 10 minutes

CLAUDE.md files, memory shortcuts, parallel sessions, prompting patterns

all in one video and completely free

works whether you're a developer, a beginner, or someone who's been using Claude for months

based on this, I put together 18 things you can copy and use in Claude today

full guide in the article below

[Mr. Buzzoni @polydao]

Atlassian's revenue: $1.79 billion last quarter
Atlassian's move: fire the engineer who built their infrastructure

his move: post a 38-minute breakdown of every system he built, free for anyone to copy

what he revealed:

> Envoy proxy instead of enterprise load balancers
> sidecar architecture for auth, logging, rate limits
> DynamoDB + SQS for async provisioning
> Packer + SaltStack for automated VM deployments at scale

Atlassian charges per employee across 350,000 customers

this guy just handed you the enterprise playbook for free

save this

[Jason Sawyer @foilmanhacks]

Devesh Logendran is the person who leaked the Avatar movie.
Using open-source intelligence, I identified him, here’s how I did it

[International Cyber Digest @IntCyberDigest]

‼️ https://t.co/5Bh62HuixW has been breached — threat actors accessed customer data and reservations, and are actively abusing it.

A Reddit user says he reported the breach over two weeks ago after being phished with his own reservation details, but Booking said everything was fine on their end.

"Given how weak their security appears to be, I'm not surprised"

[x0r @x0rCTF]

@Ustence found this forgotten piece of art recently and wish I had someone to randomly send it to me.. travel safe stranger ✨️

https://t.co/DuKfFu5EPr

[Subzero @Subzero_BG]

https://t.co/amKyfaQ4VS
Ko ima stomak za Epštajnove fajlove - par IT likova je organizovalo sve u obliku identičnom Gmail-u:
- mejlovi (praktično imate njegov mailbox)
- fotografije Jphoto (tačkice gore desno)
- dokumenta JDrive (isto)
- letovi JFlights (isto)
- ...

[Zero Science Lab @zeroscience]

Project Brainfog: Beyond the Facade - Exposing Smart Giants: https://t.co/PCg7wo5qAG

[Akhilesh Mishra @livingdevops]

Early in my DevOps career, I deleted a 5GB log file from a production server that was running out of space.

I ran df -h expecting to see the disk usage drop. It didn’t.
Still showed 100% full.

No errors, no warnings. Just the same disk usage as before I deleted anything.

That’s when I learned that deleting a file doesn’t always free up space immediately.

In Linux, what we think of as a “file” is actually two separate things: the filename (which is just a pointer) and the inode (which contains the actual data and metadata). When you delete a filename, you’re only removing the pointer. The inode and its data remain on disk as long as any process still has the file open.

In my case, the web server was still writing to that log file. Even though I had deleted the filename, the server process kept its file handle open. The inode stayed alive, invisible to normal file listings but still consuming disk space.

The space was only freed when I restarted the web server, which closed all its file handles.

This is why you need different commands to see the full picture:

# Check filesystem usage
- df -h

# Check actual directory sizes
- du -sh /var/log/*

# Find deleted files still open by processes
- lsof +L1

The du command shows you what’s actually using space in directories, while df shows filesystem-level usage.

When they don’t match, you often have deleted files still held open by running processes.

This is also why proper log rotation doesn’t just delete files. Tools like logrotate rename files and send signals to processes so they can close and reopen their file handles cleanly.

Three key takeaways:

1. Filenames are just pointers to inodes
1. Deletion only happens when no processes reference the inode
1. Always check both df and du when troubleshooting disk space

It’s a small detail, but understanding it can save you from confusing production incidents.

[DHH @dhh]

Omarchy does not contain one gram of bloat. I use everything we install by default. And it's incredible how light that package is: Just ~6GB for a complete system with all the apps, styling, and configuration needed to start doing professional work 🤩

[John Hammond @_JohnHammond]

The ん Japanese hiragana character: recently used in Booking[.]com phishing campaigns as a "Punycode" Unicode lookalike symbol for forward slashes in URL links! Homoglyph attack that makes us curious what, if any, other lookalike characters do the same: https://t.co/pOTGrplpVA

[John Hammond @_JohnHammond]

For the life of me I can never remember the registry tweaks to avoid TPM checks when installing Win11 in a VM. I finally took note of the `reg add` commands to just copy and paste into the Shift+F10 terminal.

reg add "HKLM\SYSTEM\Setup\LabConfig" /f
reg add "HKLM\SYSTEM\Setup\LabConfig" /v BypassTPMCheck /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\Setup\LabConfig" /v BypassSecureBootCheck /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\Setup\LabConfig" /v BypassRAMCheck /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\Setup\LabConfig" /v BypassCPUCheck /t REG_DWORD /d 1 /f
reg add "HKLM\SYSTEM\Setup\LabConfig" /v BypassStorageCheck /t REG_DWORD /d 1 /f

[x0r @x0rCTF]

@Cassi0peia__ imam i kosmodisk 😉

[🕊️ @lichthauch]

the snake dies if it cannot shed its skin. humans too. we carry dead versions of ourselves for years, decades sometimes. death by familiarity. death by fear of the new self waiting underneath. your body replaces every cell eventually but your mind gets stuck

[E-go @EgoDriv]

Your life will change completely the very moment you understand that you truly are limitless. There is nothing you can’t do if you put enough energy and effort into it. You can do it all, have it all, achieve it all. If you just give it all you got and stop being a bitch.

[E-go @EgoDriv]

Fuck a to-do list.

Get shit done as soon it falls on your lap.

Be the RIGHT NOW guy.

Needs to be done by next week?
Done.

Oh it’s for next month?
Fuck it, done.

You’re either on top of shit or you’re falling behind.

Get shit done right now.

Stop delaying progress.

[x0r @x0rCTF]

@Cassi0peia__ ozb poznavash prilepchanec sho koristi 'taa'?