https://wiki.zeratul.org/ 2026-05-02T18:57:35+00:00 https://wiki.zeratul.org/ https://wiki.zeratul.org/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2018-01-09T12:55:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2012-09&rev=1515502501&do=diff Issue 2012 - September Amazon - on-site interview experience Tags: Amazon, Dublin, Ireland, AWS, interview, onsite, on-site Please note this is a back-post I promised myself to do. I don't want to brag about my on-site interview at Amazon. But I've read quite slander of Amazon for its interview process. I haven't re-checked for blogs on this matter since, so it's possible there are success stories on intranets now. I don't feel like checking now. Also, if you're looking for specific questi… text/html 2013-07-06T11:02:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2013-06&rev=1373108522&do=diff Issue 2013 - June Backing up Gmail For whatever reasons I've decided to start backing up my gmail account. This is pretty straight forward even on Slackware. * In Gmail, go to Settings -> Forwarding and POP/IMAP and Enable IMAP * Download OfflineIMAP and unpack it text/html 2014-11-03T06:01:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2013-08&rev=1414994472&do=diff Issue 2013 - August apt-get remove pulseaudio I've noticed some strange lags on Lenovo G780 I've bought for my parents. It started with random lags in sound output. Then it turned in whole laptop freezing for a couple seconds. I've checked load and it was high and the only reason, the sensible one, I could think of was HDD. I thought it was APMs doing, you know - green, green, green!, so I've turned it off via text/html 2013-09-08T11:44:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2013-09&rev=1378640699&do=diff Issue 2013 - September I became a hypocrite I'm sad to say, but I became hypocrite. Some years ago, I've signed an oath not to buy any UEFI device. I did break this oath yesterday by buying Samsung ATIV Book 730U which has UEFI BIOS. I'm sorry. Perhaps one day there will be an open BIOS replacement or something. And of course, I've turned Secure Boot off and didn't install Windows 8 shipped with this notebook(no, I haven't even accepted EULA!). text/html 2013-12-21T18:52:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2013-12&rev=1387651941&do=diff Issue 2013 - December Turtle Beach PX21 after less than 11 months [Snapped off left cup] I want to share how Turtle Beach PX21 Earforce a $100 USD headphones ended after 11 months. I would, I was, expect $100 USD headphones to last longer than 11 months. Funny enough, it seems like they've reinforced joints. I guess they were rightfully worried cups might break away. Well, not good enough/wrong spot. text/html 2014-11-03T05:56:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2014-03&rev=1414994163&do=diff Issue 2014 - March The easiest and the most stupid way to break Gorilla glass It sure is easy. Just drop something, anything, on it's edge and there you go - you've new spider web theme on your phone/glass. I've managed to clip it with key - no extra force, no height, no anything. And there I was with damaged Gorilla glass on text/html 2014-11-18T08:34:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2014-11&rev=1416299667&do=diff Issue 2014 - November Writing shell in a portable way is ... Well, I guess word issue is spot on just now. Writing shell scripts in portable way seems to be anything but easy and intuitive :-) Yes, I'm having a bit of an issue here. Small code snippet text/html 2015-10-27T16:40:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2015-10&rev=1445964007&do=diff Issue 2015 - October Whoa, new entry after one year pause(without couple days). Debian Wheezy to Jessie upgrade What's there to watch out for apart from usual apt-get update && apt-get upgrade -y && sed -i 's/wheezy/jessie/g' /etc/apt/sources.list && apt-get update && apt-get upgrade -y && apt-get dist-upgrade -y text/html 2018-01-09T13:03:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2015-11&rev=1515503011&do=diff Issue 2015 - November Box diet Two of my friends mentioned a box diet(škatulková dieta). However, neither of them had any experience with it. I was kind of curious and went on to investigate what it is. I believe I've picked one site on random, read through what it is about, how much it costs, did some calculations on my own, and then decided to spearhead the experience. text/html 2020-08-27T20:47:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2020-08&rev=1598561232&do=diff Issue 2020 - August Joomla, MySQL and Access denied I've encountered weird issue with Joomla and MySQL. Joomla was working just fine on the outside, but not on the inside. For example it was not possible to create new articles because save action resulted in something like: text/html 2020-11-18T15:22:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2020-11&rev=1605712965&do=diff Issue 2020 - November Learning by failing - banks, transfers and foreign currency Short version - be careful and beware of fees. If unsure, check with your bank. That's why you pay them. Following may not apply to you. As a matter of fact, I'd be surprised if it was common nowadays, in 2020 that is. It's entirely possible it applies only to the specific bank institution since quite a lot of banks have either no fees at all or negligible ones. Anyway, here is a model situation I was curious ab… text/html 2020-12-31T20:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2020-12&rev=1609446968&do=diff Issue 2020 - December AI Perception and Awareness in --games-- Splinter Cell: Blacklist In Plea to game developers - NPC AI is good nowadays, but could it be better? I was rumbling about NPC AI in games. Well, I was reacting to game devs bragging left and right about how good AI in games is. It seems that this has been addressed in text/html 2021-03-28T09:33:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-03&rev=1616924015&do=diff Issue 2021 - March AWS Control Tower - Can you change email, change organization name, change organization name? My customer has decided to change company name, domain name and pretty much everything. Customer in question is using AWS Control Tower for consolidated billing, SSO and ease of management. What needed to be done: text/html 2021-06-29T08:51:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-06&rev=1624956668&do=diff Issue 2021 - June AWS CodeBuild and CloudWatch Logs integration I couldn't find any pictures(examples) of how AWS CodeBuild and CloudWatch logs integration looks like, therefore I've snapped some myself. It looks alright and usable, especially logs available in build status. Better than fishing logs from S3. text/html 2021-07-21T14:29:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-07&rev=1626877755&do=diff Issue 2021 - July AWS EventBridge events, Rules, Input Transformation and CloudWatch Logs as a target I'm probably daft since it took me rather considerable time until I figured this one out. If you want to store events from AWS service as CloudWatch Logs and don't need to perform any transformations then you're golden. It works out of the box, no problem(almost). But what if you want to either strip some (sensitive) data or modify input and still use CloudWatch Logs as output? Then you are in… text/html 2021-10-17T11:41:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-10&rev=1634470919&do=diff Issue 2021 - October Buying from China? Free shipping? Well, I hope you're not in a hurry, because if it wasn't fast before, it didn't get any faster that's for sure. I'm not complaining, however it's something to be aware of. Why not to buy local you ask? As long as price is 3-10x more, why would I or anyone for that matter? Where do you think text/html 2022-01-03T16:11:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-11&rev=1641226314&do=diff Issue 2021 - November AWS CLI/boto3 - security token included in the request is invalid upload failed: x.txt to s3://mybucket/x.txt An error occurred (InvalidTokenId) when calling the PutObject operation: The security token included in the request is invalid text/html 2021-12-31T23:37:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2021-12&rev=1640993877&do=diff Issue 2021 - December You're the proud owner of a Secretlab chair We're getting ahead of ourselves, aren't we? But this one caught my eye: " At Secretlab, we’ve made your comfort and well-being our business. Our chairs are equipped with a full suite of research-backed technologies and adaptive features. So you’re cradled by incredible comfort and support, from your Zoom meeting to your midday snooze. text/html 2022-01-30T21:23:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-01&rev=1643577788&do=diff Issue 2022 - January AWS CodePipeline + GitHub + git submodule There are couple of how tos AWS CodePipeline + GitHub and git submodule around - one, two(which discusses handful of solutions), three, four. And here is the one which works for me in given setup: * text/html 2022-02-25T09:33:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-02&rev=1645781620&do=diff Issue 2022 - February Beware of AWS CloudFormation Parameter defaults You might want to parametrize AWS CloudFormation stacks, either because things change over time and you want Stack to be a bit dynamic, or because one “variable” is used multiple times and it's a good practice not to repeat yourself and better to change it just in one place. Since this is a fresh Stack, you know what value of that text/html 2022-03-30T15:41:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-03&rev=1648654912&do=diff Issue 2022 - March Is AWS RDS having a bad day? Is AWS RDS having a bad day? Or is it AWS Console? Or is it my browser? All of them? Meeeeh. terraform is trolling me Terraform has compared your real infrastructure against your configuration and found no differences, so no changes are needed. ╷ │ Warning: Argument is deprecated │ │ with aws_budgets_budget.personal, │ on budgets.tf line 6, in resource "aws_budgets_budget" "personal": │ 6: cost_filters = {} │ │ Use the attri… text/html 2022-04-22T09:19:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-04&rev=1650619169&do=diff Issue 2022 - April Slack - Update your mobile operating system by September 1, 2022 " Our records indicate that you are on a mobile operating system (OS) version that Slack will stop supporting on September 1, 2022. When an OS reaches the end of support, you will still be able to access Slack. However, to receive app updates, bug fixes, and security fixes, you'll need to update to at least Android 9 or at least iOS14. text/html 2022-05-16T08:33:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-05&rev=1652689988&do=diff Issue 2022 - May AWS Event Rule, CloudWatch target and failed invocations Sadly, this isn't something I've discovered myself. However, it's hard to figure out and info hard to come by. You setup AWS EventBridge(formerly CloudWatch Events) rule with CloudWatch log group as a target by any means except web console. Events start flowing in and then - nothing. All you get are failed invocations, resp. FailedInvocation metric going up. EventBridge seems to be hard to debug since there are no logs w… text/html 2022-07-14T11:06:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2022-07&rev=1657796812&do=diff Issue 2022 - July Make django-q AWS Elastic Beanstalk and auto-scaling friendly This is backposted, as always. As I've written previously, my client has django-q deployed at AWS Elastic Beanstalk aka “boring tech”. It works, so why the hell not, except for deploys and scale up/down events. You see, despite the fact that app/VM can die anytime, despite small and idempotent tasks, we wanted to be as nice as possible and to let django-q finish whatever it was doing. text/html 2023-10-24T20:30:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2023-10&rev=1698179416&do=diff Issue 2023 - October Dear Youtube As long as it's you who decide who gets monetized and who doesn't. As long as it's you who make people disappear just like that!(but keep similar non-sense around). As long as content creators are running side-monetization channels(perhaps because you've kindly demonetized them?). As long as there is a ton of ads, because one or two ads before video wasn't enough for you, I guess. As long as it's you who who decide what I can and cannot watch. And so on so for… text/html 2024-07-26T10:58:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2024-07&rev=1721991527&do=diff Issue 2024 - July Certified Kubernetes Administrator aka CKA Despite this is a good course and I don't regret taking it, because for me this was the only way to take a look at Kubernetes aka k8s. Despite really good (marketing) campaign from The Linux Foundation that these certifications improve your chances getting hired and what not(thousands of success stories etc.). text/html 2024-09-08T13:23:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2024-09&rev=1725801835&do=diff Issue 2024 - September GitHub dependabot Action silent fail I've noticed that dependabot GitHub Action keeps on failing in many of my GitHub repositories as can be seen on provided image below. I've noticed this by pure accident, because I haven't received a single notification about this is happening despite the fact that I do receive notification when workflow fails. text/html 2025-05-24T09:31:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2024-11&rev=1748079085&do=diff Issue 2024 - November Priorities of modern workspace " Kromě volnosti při práci a prostoru pro experimentování u nás najdete neformální prostředí – občas narazíte i na pípu v kuchyňce" ... beer keg with a tap. Let's leave it at that text/html 2025-04-21T10:17:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2025-04&rev=1745230658&do=diff Issue 2025 - April Python, mysql-connector-python and MySQL Connection not available I've bumped into MySQL Connection not available. while working on a new Python script. Funny enough, this and any other exception wouldn't show up when a new MySQL connection was used per SQL query. I've read mysql-connector's documentation and my code looked solid. I've tried to search around on intranets, but nothing useful came out of that. I mean, text/html 2025-08-05T13:24:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2025-08&rev=1754400266&do=diff Issue 2025 - August Battlefield 6 is in need of some polish One of the things I've noticed during the “demo” on 31st July 2025. Models clipping through each other is expected and cannot be helped. However, that left hand on second character from the right just looks so weird. It almost looks like right hand, if anything. Maybe it's just me, I don't know. text/html 2025-09-04T21:14:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2025-09&rev=1757020490&do=diff Issue 2025 - September docker manifest create fails due to permission denied on /etc/docker/certs.d/XXX There seems to be, or was at some point, a bug in Docker build or packaging as per issue#396. Error message will vary based on Docker repository or perhaps docker tag. It's possible that this bug no longer appears in new and clean installations, but prevails when package is updated. text/html 2025-10-25T08:24:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2025-10&rev=1761380672&do=diff Issue 2025 - October How to change hostname on Linux in 2025? By golly, # hostnamectl! More specifically # hostnamectl set-hostname myhostname.example.com. No, not # hostname myhostname.example.com or # hostname -F /etc/hostname. Forget all of that, because we have systemd now. text/html 2025-12-07T21:23:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2025-12&rev=1765142628&do=diff Issue 2025 - December Stop plasmashell log spam related to PipeWire on Debian 13 Trixie I don't run PipeWire and I have intention doing so. You can and feel free to do so. Sadly, it looks like PipeWire is going to be mandatory soon. Anyway, I've noticed that my log is being spammed every 5 seconds like so: text/html 2026-04-01T19:03:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:2026-03&rev=1775070191&do=diff Issue 2026 - March Age verification in Linux and other Operating Systems I can't help, but to react to couple things in Nanny state discovers Linux, demands it check kids' IDs before booting article. My aim isn't to bash anyone, let alone the author. " At Canonical, Ubuntu Linux's parent company, developers are talking about local age‑bracket flags set at account creation and exposed via a simple application programming interface ( text/html 2026-03-13T19:47:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.zeratul.org/doku.php?id=bloglike:start&rev=1773431267&do=diff Bloglike aka not a blog I'm not in favour of blogs or blogging. And even if I was, would I tell you? However, from time to time there seems to be a topic unsuitable for wiki page. And I don't intend to run extra web just because of blog with five posts per year.