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Cake day: June 18th, 2023

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  • Kill -9 is a command on Unix and Linux to send signal 9 (SIGKILL) to a process. That’s the version of kill that is the most reliable and has immediate effect.

    Taskkill is a Windows command line program. I believe that taskkill /f uses the TerminateProcess() API. This is more forceful than the End Task button on the Task Manager. There is a different End Process button on the Task Manager that does use TerminateProcess().




  • It’s really racism. But if you want the legalistic explanation, here it is…

    The United States started out with 13 states that were all ex-British territories on the Eastern seaboard of North America. There are now 50 states. Every state after the first 13 got its statehood by first being a territory, adopting a state Constitution at a constitutional convention, and then getting that Constitution approved by US Congress, and so being “admitted to the Union.”

    Under the Constitution, only states (and Washington DC) participate in the electoral college. The concept of non-state “territory” did not necessarily exist when that part was written, because there were only the original 13, and the Louisiana purchase wasn’t done until later.

    [Washington DC is a very special “district” that is not a state and not a territory.]

    Puerto Rico has stayed at the territory stage since it was acquired in the Spanish-American war (started 1898). Why? Well, mostly racism. There have also been some popular votes in Puerto Rico, with very mixed results. In the currently evenly split political climate, getting any new state admitted is probably impossible (as it was before the civil war).

    There’s also some undercurrent that maybe the US is kinda uncomfortable holding on to these overseas islands (which are mostly connected to the same Spanish-American war). Philippines became an independent country. On the other hand, Hawaii got statehood in 1959 (but there was a whole racist history there of white colonization).


  • The Constitution says that each state shall send electors to the electoral college. So Puerto Rico’s status as an unorganized territory is a bit of a blocker.

    The District of Columbia is also not a part of any state, as specified in the Constitution. However, DC explicitly got some electors in the 23rd amendment, so they can vote for President.

    Really, the idea that the United States might have overseas territories that are not on track to statehood is itself an invention of the twentieth century. (Owing to the 1898 Spanish-American war, which caused the US to take over several parts of the ex-Spanish empire).



  • 802.11ax, clients just… (essentially) wait for a random amount of time, listen for a break in the signal, and take a leap of faith.

    Ethernet originally worked the same way, back when it competed directly against token ring. Ethernet won by being as reliable in real world scenarios while being cheaper to build out. Gigabit Ethernet was the first standard that insisted on full duplex only.

    Half duplex mode with the collision avoidance is still actively supported for 10/100, but it is becoming very hard to find an unswitched hub. So you may have to write up your own twisted pair cables.







  • When you enter the United States, customs “inspects” all the stuff you’re bringing back. If it’s more than $850 worth of stuff, then you have to go to the cashier and pay a tax.

    The tax is a percent of what the stuff is worth. The percent rate can depend on what type of goods it is, and what country it’s coming from. There are massive tables to look this stuff up.

    The stuff you carried out of the country and are now bringing back with you doesn’t count toward the $850 limit.

    If you’re shipping stuff in but not traveling with it, there is no exemption. Tax applies right away. You also have to hire a guy called a broker to help you with the CBP paperwork and to submit payment.

    So let’s say somebody is importing sugar from the Caribbean, and there’s a tariff. They have to pay a percent to the feds every time they ship in some sugar. They raise the price they charge on the sugar to cover that. Then sugar from Louisiana looks more attractive on the store shelf because it’s cheaper.

    Who pays? Whoever is shipping the goods in pays, but they make it up by charging more for the imported products.

    Why do it? Usually, you want to make some domestic industry more attractive by raising the price of the foreign competition.

    In the sugar example, sugar is more expensive to farm in Louisiana because people get paid more, and the equipment is more expensive. If there wasn’t a tariff, people might stop farming sugar in Louisiana entirely. That might make some people sad. On the other hand, all Americans would be able to pay less for sugar without the tariff.