Posts by hanno@mastodon.social
(DIR) Post #AlrfEIjoZf8wDbeeQa by hanno@mastodon.social
2024-09-10T11:17:53Z
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I'd be interested in feedback whether you enjoy such videos and take value from it. While it's obviously technically limited, particularly if I directly use a live recording, creating videos like this is feasible with not-too-much effort. If I should do it more often, please give me feedback.
(DIR) Post #AlrfEKhPHaPCIiXkx6 by hanno@mastodon.social
2024-09-10T11:19:57Z
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You can find the background article with details, a fixed infographic, and links to an interactive version here: https://industrydecarbonization.com/news/misleading-logarithmic-scales-and-the-disregard-for-energy-efficiency.html or, in case you prefer German, I translated it for @grimm 's newsletter: https://cleanteching.beehiiv.com/p/diese-berhmte-antienergiewendegrafik-ist-irrefhrend
(DIR) Post #Amkz4zgPKKj91Sxkqe by hanno@mastodon.social
2024-10-07T07:59:09Z
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Und was genau planen sie stattdessen? https://www.spiegel.de/wirtschaft/unternehmen/thyssenkrupp-ueberprueft-plaene-fuer-gruenen-stahl-a-f16f8f88-46a3-4d79-91a5-32a9fa2efd58?sara_ref=re-so-app-sh Den Hochofen ab 2045 illegal betreiben? Meine güte, das ist doch die absolut naheliegende Frage...
(DIR) Post #AoGmTZN36OPDo42ICW by hanno@mastodon.social
2024-11-21T13:16:06Z
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@kees @yossarian uh, good to know. I'm pretty sure at some point I've been told (maybe by some linting tool?) that [[ is preferrable to [.
(DIR) Post #AoGmTaC62bEsMNv3lg by hanno@mastodon.social
2024-11-21T13:21:41Z
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@kees @yossarian https://www.shellcheck.net/wiki/SC2292 says "[[ .. ]] suppresses word splitting and globbing, supports a wider variety of tests, and is generally safer and better defined than [ .. ]"Not enabled by default in current version, but I believe it was in the past.
(DIR) Post #AoGmTathQU7KXcJsjQ by hanno@mastodon.social
2024-11-21T13:28:25Z
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@kees @yossarian I'm confused, this tells me [[ is the bash'ism, and [ the posix thing: https://mywiki.wooledge.org/BashFAQ/031
(DIR) Post #AoOp4jBEdcX7OVWzr6 by hanno@mastodon.social
2024-11-25T08:51:21Z
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Dear everyone who owns domains that are *not used for e-mail*, particularly ones that are potential targets for phishing (banks, high-profile names): Could you please configure SPF+DMARC, ideally with p=reject? You may wonder: Why should I configure anything email for a host that isn't used for email? Well... it helps others to identify spam sent with your domain as the sender.
(DIR) Post #AoOp4l4ZbMOPGQQhkW by hanno@mastodon.social
2024-11-25T08:53:16Z
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I'm seeing lots of spam lately either from domains that have [easytoremembername].com and end up being domains for sale, or, today, a flood of [name of bank].de, which belongs to the bank, but is probably not used by them for email. All without DMARC.I don't recommend p=reject for actually used domains, but for domains that are *unused for email*, you have no deliverability problem, you want non-deliverability for all mails with that sender.
(DIR) Post #AqAXtoga5SmJEvr08e by hanno@mastodon.social
2025-01-17T09:36:11Z
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I hear Fortinet customers are having a lot of fun. Shall I repeat my rant about "cybersecurity" products from last time? If you run a Forti appliance: Will you stop doing so? Will you buy one from one of those other vendors that fucked up in recent years? Is there any situation in which you will admit that these things do more harm than good?
(DIR) Post #AroqPK3fWzI2hPmLMe by hanno@mastodon.social
2025-03-07T17:14:30Z
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Dear Internet hivemind, I have a tech problem. I use nextcloud as my calendar. I get a lot of ics files these days, via email, or from web pages where I signup for events. I want to get the ics files into my nextcloud calendar without it being annoying. I think it should be simple to solve, but somehow, it isn't. I don't find any good answers how I might do that. Maybe I'm googling for the wrong terms. 🧵
(DIR) Post #AroqPLSALOTn1gFQBc by hanno@mastodon.social
2025-03-07T17:16:22Z
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Ultimately, what I want is some scriptable tool that I can run - either locally or on the server - that takes an ics file and puts it into the calendar. Either something that utilizes nextcloud's commandline stuff, or a web API. I *think* this could be done with caldav. Which is, as far as I understand, a way other applications can interact with a calendar application like nextcloud. Yet: How excatly would I do that?
(DIR) Post #AroqPMMWxpZ9qUcR2e by hanno@mastodon.social
2025-03-07T17:18:49Z
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Assuming I neither want to learn how to parse ics files or how caldav works internally. Isn't there any tool that takes an ics file and uploads it to a caldav-capable calendar? Or am I thinking wrong, and I should solve my problem in a different way? How? Can anyone point me to a howto/doc/blogpost that is simple and explains how to do that?
(DIR) Post #AtqaXjFeddUSCINSyW by hanno@mastodon.social
2025-05-07T07:45:54Z
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This is a gruelling summary of all the things wrong with OpenSSL https://www.haproxy.com/blog/state-of-ssl-stacks I've mostly watched this whole thing from the sidelines, but was also affected noting that private key parsing suddenly became 70 times slower. I think they've now improved it to "only" be 10-20 times slower, and there does not seem any effort to work on it any more.
(DIR) Post #B2F291R4Ndymwyg9Zo by hanno@mastodon.social
2026-01-13T11:14:23Z
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Mysterious bug from hell: I noticed that a Docker container running an Apache web server was sometimes shutting down for no apparent reason, but rarely enough that it was difficult to reproduce. After adding some debugging (given this shuts down the container there was no way to access the logs afterwards easily) and waiting for the issue to show up again.🧵
(DIR) Post #B2F2930YXBxXpKI0Wm by hanno@mastodon.social
2026-01-13T11:15:52Z
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Today, the issue showed up again, this time with my debugging code showing me the logfiles before shuttiing down the container:"AH00170: caught SIGWINCH, shutting down gracefully"What is SIGWINCH? It is a signal for "window change", aka, I resized the terminal window. Ok... that makes some sense that I would observe this occasionally, but not reproducibly, and resizing a terminal is certainly not something I had expected as the cause. But... why?
(DIR) Post #B2F298u2cKJU6rHtCq by hanno@mastodon.social
2026-01-13T11:18:00Z
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I mean, why does apache, A WEB SERVER THAT SHOULD NOT DISPLAY MUCH ON THE TERMINAL AND CERTAINLY HAS NO GUI TO REDRAW, care when I resize my terminal?Turns out, as you can read here https://stackoverflow.com/a/787509/3780436 or in their bug tracker (however, they locked down their bugtracker and you cannot even read it without registration) that, apparently, apache decided to reuse the SIGWINCH signal as you usually don't run apache in the foreground...
(DIR) Post #B2F29ErQSxmoaU6sxk by hanno@mastodon.social
2026-01-13T11:21:19Z
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I guess there's some way to workaround this... just have to figure out how.But... certainly unexpected, and given that "run thing in the foreground in your container" is pretty common stuff these days, maybe Apache should reconsider that decision...
(DIR) Post #B2F29KiQhK9gkJwmm0 by hanno@mastodon.social
2026-01-13T11:25:30Z
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For what it's worth: this also happens with the official Dockerhub httpd image...So I guess they haven't found a workaround yet either...
(DIR) Post #B2F29QNjdBAOJsJLLk by hanno@mastodon.social
2026-01-13T11:37:48Z
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Reported: https://github.com/docker-library/httpd/issues/280
(DIR) Post #B2edhAnk3gJY9VWeZM by hanno@mastodon.social
2026-01-16T14:45:34Z
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TIL: the standard Linux "tar" tool stores the PID of the tar process in the tar file... https://reproducible-builds.org/docs/archives/