In the past Vivaldi used their own user agent string and they ran into a bunch of issues. And they are a chrome derivative! They had to default to the chrome user agent. Here are the examples they cite in their announcement of the decision:
"On Google.com if you present a Vivaldi user agent and arrive via a redirect, the search text box will be misaligned
On Google Docs if you present a Vivaldi user agent you will receive a warning
On Facebook’s WhatsApp web interface if you present a Vivaldi user agent, you cannot enter the site and are advised to switch to one of our competitors
On Microsoft Teams (chat and collaboration website), presenting a Vivaldi user agent will stop you from being able to use the website
On Netflix, presenting a Vivaldi user agent results in a suggestion to install Silverlight to play videos… yes… really… Silverlight!"
When these mega-companies block new competitors it really ought to be seen as collusion. Google, Facebook, and Microsoft certainly have the resources to test and approve the occasional new browser.
They don’t even have the resources to test the most common browsers on every scenario of every page of every application, let alone fix every issue such testing would find.
It depends on what you are looking for. My recommendation for learning "how is X done in a shell" is the OpenBSD ksh: https://github.com/ibara/oksh
It's what they use for /bin/sh, it has everything that a complete shell needs (including a mechanism for providing command completions) and has code that is much easier to read than bash or zsh.
I don't know much about Turkey, but I assume they are referring to Erdogan. Turkey was a pretty solid democracy and he turned it into an authoritarian regime.
Erdogan also has some interesting ideas about the economy. A quote from his Wikipedia article: "He has pushed the theory that inflation is caused by high interest rates, an idea universally rejected by economists. This, along with other factors such as excessive current account deficit and foreign-currency debt, in combination with Erdoğan's increasing authoritarianism, caused an economic crisis starting from 2018, leading to large depreciation of the Turkish lira and very high inflation."
Erdoğan is not the first person to mess up the economy of the country, but extreme deep corruption and antidemocratic playbook were never experienced before. If you ask his base, everything's fine though.
There currently is a patch for adding '-S' to OpenBSD and in the discussion, the one who came originally up with it commented on how he added it to FreeBSD:
"IIRC, the catalyst for it was that early FreeBSD (1990's?) did split up the words on the '#!' line because that seemed convenient. Years later, someone else noticed that this behavior did not match '#!' processing on any other unix, so they changed the behavior so it would match. Someone else then thought that was a bug, because they had scripts which depended on the earlier behavior. I forget how many times the behavior of '#!' processing bounced back and forth, but I had some scripts which ran on multiple versions of Unix and one of these commits broke one of those scripts.
I read up on all the commit-log history, and fixed '#!' processing one more time so that it matched how other unixes do it, and I think I also left comments in the code for that processing to document that "Yes, '#!'-parsing is really supposed to work this way".
And then in an effort to help those people who depended on the earlier behavior, I implemented '-S' to the 'env' command.
I have no idea how much '-S' is used, but it's been in FreeBSD since June 2005, and somewhere along the line those changes were picked up by MacOS 10. The only linux I work on is RHEL, and it looks like Redhat added '-S' between RHEL7 and RHEL8."
[https://marc.info/?l=openbsd-tech&m=175307781323403&w=2]
FWIW, GNU Coreutils env (as seen for example in my Linux Mint distribution) works the same way (no split by default, enabled by `-S`) and I definitely have used it locally to do things like `#!/usr/bin/env -S python -S -I`.
unzip is a special case: upstream development has basically stopped. The last release was in 2009[0]. (That's the version 6.0.) Since then there were multiple issues discovered and it lacks some features. So everybody patches the hell out of that release[1]. The end result is that you have very different executables with the same version number.
I maintain a huge number of git mirror of git repositories and i have some overview of activity there. Many open source projects have stopped activity and/or do not make any new releases. Like syslinux, which seems to be in a similar situation as unzip. And some projects like Quagga went completely awol and don't even have a functional git remote.
So unzip is not really that special, its a mode general problem with waning interest.
I wasn't trying to imply that unzip is the only one.
But the way I learned that unzip is unmaintained was pretty horrible. I found an old zip file I created ages ago on Windows. Extracting it on Arch caused no problem. But on FreeBSD, filenames containing non-ASCII characters were not decoded correctly. Well, they probably use different projects for unzip, this happens. Wrong, they use the same upstream, but each decided to apply different patches to add features. And some of the patches address nasty bugs.
For something as basic as unzip, my experience as a user is that when it has so many issues, it either gets removed completely or it gets forked. The most reliable way I found to unzip a zip archive consists of a few lines of python.
I agree completely. I also know that distros patch packages.
But for unzip the situation is particularly bad because it has no maintainer. Normally, you would raise feature requests for basic functionality upstream and once added, the maintainer would cut a new release. So software with the same version number generally, but not always, behaves similarly across distros.
But for unzip, because upstream is unmaintained, distro maintainers started to add features while keeping the version number. So in the end you end up with different behavior for what looks like the same release.
Somebody once tried to clarify the situation with a similar stunt, but failed spectacularly. From the NOLF Wikipedia page:
In May 2014, Nightdive Studios, a publisher of classic PC titles, filed trademarks for "No One Lives Forever", "The Operative", "A Spy in H.A.R.M.'s Way", and "Contract J.A.C.K.", Nightdive had also been able to acquire the source code for the games, which would enable them to remaster them for modern computer systems. However, Nightdive had yet to comment on the situation regarding who owned the rights to the game. At this point, the rights to the series were unclear, as the property may have been owned solely or in part by 20th Century Fox (which owned Fox Interactive at the time of the game's release), Activision (which acquired and merged with Vivendi Games, which in turn was the parent to Sierra Entertainment, the publisher of No One Lives Forever 2, and had acquired Fox Interactive in 2003), and Warner Bros. Interactive Entertainment (which acquired Monolith Productions). Warner Bros. did file opposition to Nightdive's trademark, leading Nightdive to try to seek a license arrangement. However, Warner Bros. representatives were concerned that if either Fox or Activision had a part of the ownership, that they would also need their approval. Nightdive attempted to work with Fox and Activision to search their archives, but as these transitions pre-dated computerized records, neither company wanted to do so. Nightdive's efforts were further stalled when they were told by Warner Bros. that they had no interest in partnering or licensing the IP, leading Nightdive to abandon their efforts to acquire the rights.
There was a court case about this. Project Gutenberg got sued by a German publishing house for hosting works still copyrighted in Germany.
"Although they were in the public domain in the United States, the German court (Frankfurt am Main Regional Court) recognized the infringement of copyrights still active in Germany, and asserted that the Project Gutenberg website was under German jurisdiction because it hosts content in the German language and is accessible in Germany." [1]
Project Gutenberg lost repeatedly in court but the whole saga ended with a settlement.
"Under the terms of the agreement, Project Gutenberg eBooks by the three authors will be blocked from Germany until their German copyright expires." [1]
So if you have a German IP you can't access the ebooks, but if don't you can read them.
What I learnt is that there is a rest mass and a relativistic mass. The m in your formula is the rest mass. But when you use the relativistic mass E=mc² still holds. And for the rest mass I always used m_0 to make clear what it is.
sounds like you had a chemistry education. relativistic mass is IMO very much not a useful way of thinking about this and it is sort of tautologically true that E = m_relativistic because “relativistic mass” is just taking the concept of energy and renaming it “mass”
This is all sort of silly IMO. The equation, like basically all equations, needs context. What’s E? What’s m? If E is the total energy of the system and m is the mass (inertial or gravitational? how far past 1905 do you want to go?), then there isn’t a correction. If m is rest mass and E is total energy, then I would call it flat-out wrong, not merely approximate. After all, a decent theory really ought to reproduce Newtonian mechanics under some conditions beyond completely at rest.
IMO, when people get excited about E=mc^2, it’s in contexts like noticing that atoms have rest masses that are generally somewhat below the mass of a proton or neutron times the number of protons and neutrons in the atom, and that the mass difference is the binding energy of the nucleus, and you can do nuclear reactions and convert between mass and energy! And then E=mc^2 is apparently exactly true, or at least true to an excellent degree, even though the energies involved are extremely large and Newtonian mechanics can’t even come close to accounting for what’s going on.
inertial mass, rest mass, gravitational mass - these are essentially all the same thing. “relativistic mass” is an additional concept where we rewrite energy as mass and is considered archaic
I should have used m_0 to avoid confussion. Anyway, as he sibling comment says, most modern advanced books of special relativity try to avoid the relativistic mass. It's useful for some calculations, like synchrotron, but the problem is that for forward/backward acceleration you must use other number so the relativistic mass add confussion. https://en.wikipedia.org/wiki/Mass_in_special_relativity#His...
In my company the official policy is that nobody but the admins gets administrator privileges. If you need them the workflow is that you go to IT and they do what is necessary. Or they just might say no. People had to complain that makes work impossible for them and will cost the company a lot of money so that they got exceptions -- but only after escalation to upper management.
I think this was a security directive that came from the top.
"On Google.com if you present a Vivaldi user agent and arrive via a redirect, the search text box will be misaligned
On Google Docs if you present a Vivaldi user agent you will receive a warning
On Facebook’s WhatsApp web interface if you present a Vivaldi user agent, you cannot enter the site and are advised to switch to one of our competitors
On Microsoft Teams (chat and collaboration website), presenting a Vivaldi user agent will stop you from being able to use the website
On Netflix, presenting a Vivaldi user agent results in a suggestion to install Silverlight to play videos… yes… really… Silverlight!"
(https://vivaldi.com/blog/user-agent-changes/)