Jadi

A freedom lover from Iran. Techie, Programmer, Linux expert & Content creator who advocated the freedom of keyboard and human rights.

Public Key

npub1c29weetz4uk46vl8ja6a98lxqfsz8e27vsdlcqlp8zeqvmkezyaqlupw98

NIP-57 Address

clarityoutstanding988173@getalby.com

Profile Code

nprofile1qqsv9zhvu4327t2ax0newawjnlnqycpru40xgxluq0sn3vsxdmv3zwspzpmhxue69uhkummnw3ezuamfdejsz9thwden5te0wp6hyurvv4ex2mrp0yhxxmmdl6494r

Publishing to

nostr.wine

purplerelay.com

relay.damus.io

Author Public Key

npub1c29weetz4uk46vl8ja6a98lxqfsz8e27vsdlcqlp8zeqvmkezyaqlupw98

Show more details

Last Notes

2024-09-12 05:55:02

GM Nostr & Happy Programmer Day... And thank you @npub1acg6thl5psv62405rljzkj8spesceyfz2c32udakc2ak0dmvfeyse9p35c for gossip!

2024-09-11 15:02:43

And...
If you are a gun owner who doesn't own any Bitcoin, fix that.
#nevent1q…j5jl

2024-09-05 14:46:52

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Nostur

2024-09-05 14:18:15

@npub1ktt…yhz0 Wow.. your https://github.com/0xtrr/nostr-tool is amazing! Thanks for all the effort, time & love.

2024-09-02 12:32:28

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Beautiful!

2024-09-01 19:16:16

https://nostrcheck.me/media/c28aece562af2d5d33e79775d29fe6026023e55e641bfc03e138b2066ed9113a/94ce364031b1c8683b9656b5efb43fb4b3a2ad8311e523f4faf791f1f8cfae42.webp

2024-09-01 19:07:13

Installed the #Nostur app on ipad, functinal and beautiful. Thanks @npub1n0s…lahe

2024-09-01 10:39:41

Begin on Nostr makes me happy.
Being on X makes me anxious.
I understand how Nostr works.
I do not understand youtube tech & algorithms.
When on Nostr, I have the "I have to make something" mentality.
When on Instagram I'm on "let's do one more scroll" mode.
So I'm #Nostr .

2024-09-01 09:34:53

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Was a very interesting episode. I also really enjoyed listening to it. The experience was great, and the narration was very easy and interesting to follow.

2024-08-22 08:38:32

Another video to help you get better at Algorithms. This one is called "Majority Element". It is an easy level array question but with two twists:
1. I have written it in Rust to make it more fun (and you can try in Python or whatever)
2. There is a very cool and fast solution for this problem which is very difficult to find if you have not seen it. On the 2nd step, I show that one; called "voting algorithm".
https://youtu.be/Z0GgVxrp5I4
#programming #rust #algorithm

2024-08-18 11:37:49

Recently I'm recording some videos; describing the solutions to some programming interview questions. In this one (from Google) we are faced with an ordered array and we need to remove the duplicated elements and return the number of unique values; IN PLACE!
https://youtu.be/BQ6hWnAbKCA

2024-08-16 05:43:18

Thinking about sending an email to info@ElSalvador.sv (or something similar) and say:
- I'm into bitcoin
- I have [small] code contributions to bitcoin
- I stack sats
- I'm a good programmer with a remote job with a German company
- I have lots of educational videos; I contribute to society
And ask if I can come and live there for a year :D

2024-08-15 13:14:22

OMFG! Nost has replies?
#nevent1q…f8m5

2024-07-31 13:24:27

In this short video I'll show you how to start your LLM (Large language model) journey as a programmer. After a short intro on LLMs, I'll show you how to start using a smaller model (SLM / Small language model) via ollama and interact with it using CLI, Curl & Python using openai library.
https://youtu.be/WQPqyxxvBxA

2024-07-17 14:34:19

Top Algorithm Interview Questions Fully Explained; Ransom Notes using hashmaps
https://youtu.be/V5NbOeaUCj8

2024-07-03 06:23:55

regreSSHion: RCE in OpenSSH's server, on glibc-based Linux systems explained
https://youtu.be/1Me2ZwjB2cQTodays winner of #AI_of_shit

2024-06-25 07:08:15

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Not exactly "freed". Pleaded guilty I think; in exchange of "not going to prison". Still good. and 100% agree with the 2nd part.

2024-06-25 06:59:23

Check this #clock and be amazed
https://aem1k.com/qlock/
Check the page-source and try to understand how ti shows the time ON its own js code.
#javascript #blackmagic

2024-06-18 15:45:45

Top Algorithm Interview Questions Explained - Valid Parentheses - Stacks, Easy
In these series I'm going to solve many Programming Interview questions related to algorithms and explain my thought process. I will try to be detailed and show you how a programmer thinks when confronted with such questions.
This one is about Stacks and is Easy:
Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
An input string is valid if:
- Open brackets must be closed by the same type of brackets.
- Open brackets must be closed in the correct order.
- Every close bracket has a corresponding open bracket of the same type.
https://youtu.be/ovTttKIUyHk

2024-05-20 13:35:10

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Not having the talent.

2024-05-20 13:02:16

Unleash Your Inner Geek: Crafting your own Unix Command! Program your own 'who' and 'users'.
Ever wondered how the Unix wizards conjure up their spells? Join me on a thrilling journey as we decode the magic behind the who and users commands. This isn't just another tutorial; it's your gateway to becoming a command line sorcerer on Linux, BSD, or Mac systems.
‍ We'll start by unraveling the mysteries of the UTMP unix version 1 format on OpenBSD, guiding you through the arcane process of information extraction. Then, we'll peek into the very source code of the users command, revealing secrets that have been closely guarded by the Unix Elders.
By the end of this adventure, you'll not only be versed in the ancient UTMPX texts but also be ready to craft your very own users or who commands. Imagine creating a bespoke tool like is_logged_in, which can divine the presence of a user with a simple 1 or 0.
Prepare for that 'Eureka!' moment, as the curtain lifts and the commandline's enigmatic workings become clear. If you're armed with basic programming knowledge, this video will elevate your skills to mystical heights.
So, are you ready to wield the power once held by the Unix Elders? Let's embark on this quest for command line enlightenment together!
https://youtu.be/LBC_EnJU9HI

2024-05-19 07:45:47

Ansible. Ansible. Ansible. Running larege playbooks on a cluster of servers to test our installation process and become ready for our next release. #work

2024-05-18 11:39:31

Published a new version of my UTMP-Classic crate. It can parse the classic UTMP files which #OpenBSD still uses to keep track of logged in users and such.
https://crates.io/crates/utmp-classic
in this version I upgraded the zerocopy to 0.7 series and it needed some changes because of the new zerocopy::Ref .

2024-05-13 05:41:54

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During storage? or transmission?

2024-05-11 14:21:11

Hetzner (like many other providers) do not provide #OpenBSD machines.. but there is a nice #syadmin trick to install your beloved OS over whatever they provide. In this video we will see how you. In short:
1. Create your #GNU / #Linux machine
2. Login, wget & dd the IMG
3. Reboot in Console and install using network installation (say http packages)
4. Reboot in your new OS
5. Have fun.
Here is my video of above steps... with some more info, discussion and fun :)
https://youtu.be/vSVQXWbnNgY

2024-05-11 07:30:02

Reminder: #Nostr is decentralize. Change your client, start your relays. Keep it decentralized. Decenteralization is not only a tech concept, but a metnal one. Search for clients and try them. Contribute and have fun.

2024-05-08 06:56:27

Have 10mins to deepen your understanding of #Unix like systems?
Check the utistd.h page. This is the header file that provides access to the POSIX operating system API. Even a quick browse can show you how your program talks with your OS.
https://en.wikipedia.org/wiki/Unistd.h
For example whenever your program needs a higher privilege (or to act as another user), it calls `setuid` for that. Or starts with `sudo/doas` to have a higher access but calls `setuid` to become "nobody" in most of its life cycle.
If still have a click to spare, check the setuid.h on #OpenBSD man pages:
https://man.openbsd.org/setuid.2
in most cases OpenBSD man pages are the best references you need to understand the OS.
#BSD #Linux

2024-05-07 16:51:58

I was sending a minor PR to the uutils / #coreutils project regarding a breaking test on #NetBSD and thought its a good opportunity to record a video and:
- talk about the uutils/coreutils which is a rewrite of coreutils in Rust
- show the #NetBSD env and do some coding in it
- Show the flow of sending a PR on #github
https://youtu.be/5JcaQWGMRVE

2024-05-07 11:17:33

https://void.cat/d/RtzW6jTikT1yvnyfot1KTg.webp
Everyone else: @npub1sg6…f63m is not on blah blah...
We on #nostr: jack is here.

2024-05-05 09:49:49

Moved my mastodon account from Mastodon.social to bsd.cafe . Why? to support the decentralized nature of mastodon, promote the federation and encouraging people to be part of smaller inter-connected communities.
So if on mastodon, find me at @jadi@bsd.cafe

2024-05-05 09:48:32

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Amazing work

2024-05-02 13:29:13

Exploring the 'CON' Folder Mystery in Windows by studying the recently published source code of DOS4
It's a well-known quirk that Windows doesn't allow folders named "CON" or "COM1"—a restriction that persists in 2024. While the reasons may be familiar to some, the release of MS-DOS 4.0's source code by Microsoft offers new insights. Join me as we dive into this code from over three decades ago for a fresh perspective and a retrospective peer review.
#programming #clang #c
https://youtu.be/I-L1ZxATR8U

2024-04-30 12:26:35

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will do later. I'm still considered new to it. better to be using it as one of my main machines for a month before commenting.

2024-04-30 11:11:26

Fixing a bug in the #rust coreutils related to the returned value from the `kill` command & sending a pr on #github
https://youtu.be/wzWNkNPHJx0
#programming #unix #linux

2024-04-30 07:15:58

Tried all major BSDs for a week and reinstalled the #OpenBSD and will use that on my laptop for some time.

2024-04-28 13:43:29

Have to record a video about my #OpenBSD journey.

2024-04-23 14:24:15

#Fedora #GNU / #Linux 40 is now officially available.
https://fedoramagazine.org/announcing-fedora-linux-40

2024-04-09 14:15:20

https://void.cat/d/2wGxZKf2rZvDVzHdKcidg9.webp

2024-04-09 11:28:28

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👀

2024-04-09 07:39:55

A programmer who contributes to projects on github? check the
https://claim.fluence.network/
and you might be eligible for their recent airdrop.
P.S. check the https://fluence.network/ for more info about the project, they call it Cloudless Computing... Sales people :| I would call it "network of computers running your code in exchange of a token ... and more!"
#airdrop

2024-04-08 11:53:36

added a Zap icon & address the latest video on youtube... lets see if any body "understands" it. I would zap if I see one :D

2024-04-08 09:57:59

Dear #Brazil, I live in #Iran and I know what a bad route you've stepping in. Please don't.

2024-04-08 07:09:30

https://void.cat/d/7x9qB7uN4KfjxiebdpdbRy.webp
#bitcoin #btc
One with, one without - Ernie Bushmiller

2024-04-07 12:15:30

https://void.cat/d/32WyCCGxbMBjvJs2MVoBN7.webp

2024-04-07 12:07:41

The mere face of this #doggo always makes my day brighter :D
https://void.cat/d/2t4N5jrW6skt8MEGkbXoEY.webp

2024-04-07 12:06:33

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haha right. I thought connecting my wallet should be enough and the snort will show them beneath my notes. added to the profile now. ⚡️

2024-04-07 08:08:07

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OpenBSD might be a more desktop friendly flavour. But try them and see which one works better for you and enojy the path.

2024-04-07 08:02:25

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2024-04-07 07:52:30

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A responsible miner would turn his miners off to prolong the mining time and push the halving toward 20th :D

2024-04-07 06:41:18

Play #chess using... wait for it.. only gnu `sed` :)
https://github.com/moldabekov/chess-sed

2024-04-06 18:03:09

Watched Tetirs (2023). Fun to watch but they had to level down the *hollywoodness* at least to 50% and chose a better Gorbachev :) Going to read "Tetris: The Games People Play" now; a graphical novel on the same subject.

2024-04-06 15:53:55

This is kind of trending... in my level. Happy about it.. specially feel great / motivated when people comment and say it was understandable :D
#nevent1q…jjr5

2024-04-06 15:52:16

Connected my Wallet to @npub1get…0nfm , Any kind Zappers? :D
And they provided me with one additional invite. DM me if you need it. FIFO.

2024-04-06 05:12:08

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Thanks :) sent the DM . Awesome.

2024-04-04 09:07:37

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Just found out that this is also available in Konsole & gnome-console. Cool.

2024-04-04 08:30:59

Hey! Other terminal emulators... Warp Terminal informs me when a long running task is finished. Please implement this :D
warp download (with my referral to get a t-shirt or something):
https://app.warp.dev/referral/NPM454
And hey warp... please Open source your great terminal so we will be able to trust more + ask others to test it more.
https://void.cat/d/GZuV4SFXoULE5ZvkYfRwqe.webp

2024-04-04 06:58:02

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bitcoin:bc1qmszveztthz2xdcvm8qqpyqtfq38r5rguupank6?amount=0.00000403&label=Happy%201403
https://void.cat/d/LieyxSGrqyry2x3Ed5YgwM.webp

2024-04-03 15:07:04

Added colors and "graphics" to my terminal based clone of the retro River Raid in Rust. Now its more fun to play :D
https://youtu.be/n_dMSjDbe60

2024-04-03 08:42:41

Donkey Island; A Czech parody game from 90s
https://www.retrogames.cz/play_410-DOS.php?language=CZ
And a recently translated English version can be played free & online from here.... takes ~4h: https://donkeyisland.zip/

2024-04-03 08:34:38

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Its an old one and not functional anymore. Tried Alby but it needs invitation codes. will think of something later :) but thanks dude.

2024-04-03 08:05:55

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is this published?

2024-04-02 07:02:34

The last like I *collected* is for Mar 3rd :D

2024-04-02 06:27:58

Unveiling the xz Utils Backdoor which deliberately opens our SSH connections for RCEs
https://youtu.be/gyOz9s4ydho

2024-02-19 13:30:45

Writing games have been always a way to 1. learn more, 2. enjoy numerous hours and 3. test our knowledge. Here I'm writing a simple Space Pizza Hunter without using any game engine to show you how easy, fun and entertaining this activity is!
https://youtu.be/7Jr2uA9K2Rk

2024-02-18 12:23:19

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But you give a shit about Nostr! So IMO you are still highly into tech, you are not into latest products anymore :)

2024-02-11 11:15:06

Lots of GNU/Linux & security websites are talking about CVE 2023-50547 which lets remote code execution on practically all of GNU/Linux distros, and whoever is using `shim`.
In this video, first we will review the importance of the shim, then understand about the attack will step into the source code for a better understanding of how it happens and how RedHat mitigated it on the source level...
https://youtu.be/upcB66_KCjs

2024-02-02 13:58:11

There is a fun command in vim called ":smile". Here I'm reading the source code to understand it and adding a new command to vim just for fun.
We will learn more about professional C programming, compiling software and ...
https://youtu.be/_ja9gXKmbAs

2024-01-30 10:19:40

How hackers hack CCTV & Webcam & IP Network cameras
https://youtu.be/HuVY0T3J_Io

2024-01-27 17:49:21

Testing gossip 0.10.0

2024-01-15 13:20:54

How to Use BCrypt to Store Passwords Securely: A Guide to Hashing Best Practices
Plain text passwords are a big no-no. Hashed passwords are better, but not safe enough. Salted passwords are even better, but where do you store the salt? And what if faster computers can crack your hashing algorithm?
In this video, I will show you the ultimate solution to all these problems: bcrypt. It is an industry-proven method to store hashed passwords+salt+algo in one place.
https://youtu.be/dtBNNV6PzPA

2023-11-02 09:18:14

Poof... at last managed to close a ticket which was open for 6 months.
It's a story about a functionality with lots of sub-tickets.
And great day to close this. I'm starting a 2 weeks holiday from tomorrow; cycling in Philippines.

2023-10-30 14:44:53

And... I got it :)
#nevent1q…mae8

2023-10-30 09:53:42

Waiting for the Philippines visa; 3 weeks already. and have my plane tickets for the next Thursday. Tried to call and say what... today is a national holiday in Philippines.
p.s. travelling for a 14 days cycling trip.

2023-10-24 11:39:06

Interesting read (and design) about the difference between men & women pockets on jeans:
Someone clever once said
Women were not allowed
Pockets
https://pudding.cool/2018/08/pockets/

2023-10-22 09:29:02

https://void.cat/d/BFZXgVtHEmCgJw9zaEDEGF.webp

2023-10-19 06:27:21

Because #Nostr Lacked Kramer #meme
https://void.cat/d/U3KwgAFZ2tej6S3NvcsjAW.webp

2023-10-17 10:58:43

Was frustrated by a problem in our "program" for 3 days. No troubleshooting workek. Asked for a colleagues help and ... the problem was in nginx configs! #silly_me

2023-10-09 14:05:18

When learning the programming, seeing a mature program with all the loops and conditions might look confusing. You might wonder how the programmer has coded all of this?
Here I'll show you how a programmers might solve a challenge in its most basic / simple form and then add loops and conditions to make it more general / userful.
https://youtu.be/S3uP-9bBssE

2023-10-07 13:41:42

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Ened up using Hurmit or Comic Shanns for some time :) just for fun. And I may stick with it. One my role model programmers do use Comic Code for all terminal stuff (which is where he lives).

2023-10-07 05:02:39

GM Nostr from middle east
https://void.cat/d/8YTRHQS15viJXdKqYKU493.webp

2023-10-07 04:59:19

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1. Are you on Windows?
2. "Viruses" have switched to the survival side. They do infect silently. They do not interfere with everyday life and in most cases they do not "infect" userspace files & only infect systems.

2023-10-05 05:41:44

BBC Gives up on Threads, sticks with Mastodon.
But do we want BBC on Nostr?
https://darnell.day/bbc-gives-up-on-threads-by-instagram-sticks-with-mastodon

2023-10-02 04:58:39

A sample of an reverse engineering a binary using IDA for a CTF challenge (Actually Baby, MapleCTF 2023)
https://youtu.be/krJJEavwX2U

2023-10-01 12:18:31

In the last video of my LPIC series, we are talking about Encryptions.
First we will have a look at the concept of Key pair (Public & Private) encryption and its usage in SSH (including passwordless logsin):
https://youtu.be/ElbC0EtZc4c
Then I will cover the ssh tunnels. Seldom seen but super useful in everyday life (including X11 Forwarding):
https://youtu.be/bjvOJNmWgYI
And we will finish by seeing how the `gpg` tool lets us encrypt & sign data:
https://youtu.be/BX6BB8bqy24

2023-09-24 08:40:32

Every time I'm tired of the "normal world", I open my nostr and feel like I'm in a very small planet with the best weirdos!

2023-09-23 10:43:13

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to update your Nostr

2023-09-21 11:01:22

Published new sections from my Free LPIC1 videos. Covering the Security Admin Tasks: https://youtu.be/rNxitwVtRvo

2023-09-02 14:51:25

Bored, and not feeling to start doing anything. will stay bored.

2023-08-27 06:52:39

https://void.cat/d/XKfPU7P4shfDhzxFxPfGSn.webp
Created it a moment ago to be shared on our companies Discord. You may need it too.

2023-08-21 13:24:00

Published the new section of my free LPIC1 course; 109.2 - Persistent Network Configuration. 3 videos.
https://youtu.be/YN8sJuy9df8

2023-08-21 06:32:29

Someone asked me to suggest a book for her husbands bd whom is a game designer. Suggested "The Making of Prince of Persia" and https://en.wikipedia.org/wiki/In_the_Beginning..._Was_the_Command_Line; if he is over 35 and remember "in the beginning" days.

2023-08-20 14:25:05

Published the latest epoisode of my podcast.

2023-08-16 13:34:51

Nothing works.
p.s. for today. will try again tomorrow.

2023-08-14 09:10:55

Tetris; but the blocks are ASM instructions, your score is stored in memory and space rotates registers 🕶
https://ofrak.com/tetris/

2023-08-14 05:32:38

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that one... adding some output to one of the command line tools which was running 100% silently. sowing where the keys are created or if the already exist, where they are.

2023-08-13 07:04:51

Started my day with sending another #startos contribution to fix a bug a user had. Fun code base and a joy to work on.

2023-08-12 14:15:48

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Roger that

2023-08-12 13:26:40

Installed my instance of #staros to play with. Do not have the hardware... will trying on a VM for now.

2023-08-12 11:41:18

Published a basic programming video from my "Practical Programming Practices" series: finding the number of 3 digits numbers which can be made using only 2 digits from 1-9.
These series are aimed toward the people who "learn programming" but can not program.
https://youtu.be/o5oI5TcyPD0

2023-08-11 13:54:20

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They will see soon... and they will join.