acfoltzer
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acfoltzer.net
acfoltzer
@acfoltzer.net
1.2K followers 600 following 1.6K posts
fun: cats, flying, photos, synthesizers, strategy games
work: computer
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acfoltzer.net
thank you @ccshan.woof.group.ap.brid.gy and also I am sorry
In the style of "Zohran *for* New York City": I'd just like to interject *for* a moment. What you're referring to as Linux, is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux,” and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called “Linux” distributions are really distributions of GNU/Linux.
November 9, 2025 at 5:20 PM
acfoltzer.net
high-contrast photo of an orange tabby cat in partial sunlight. the depth of field is small, but we can see the suggestions of greenery and a blue sky through a blurry window. his full attention is focused over our right shoulder as he faces the young day
November 9, 2025 at 5:01 PM
acfoltzer.net
good morning
a crow wades through a large, leafy puddle accumulating around the curb cut of a sidewalk corner in a gray scene. a corrugated metal trough planter, dog water bowl, and bike racks line the street. bench seating and a colorful sandwich board reading "sizzlin' hot dogz" rest against the green brick building.
November 1, 2025 at 3:45 PM
acfoltzer.net
she was putting on a snoozing clinic when we were there last
a snow leopard draped over a well-scratched log, legs and luxuriously thick tail dangling down and face resting upwards into the sun
October 30, 2025 at 12:11 AM
acfoltzer.net
I am pleased to report there is yet more cool shit in this paper
screenshot of text: Direct measurement of the wind with lidar in space has recently become possible with the Aeolus mission (https://www.esa.int/Applications/Observing_the_Earth/Aeolus). Aeolus, launched in 2018, is the first satellite mission to provide global profiles of Earth’s wind in cloud-free air. Short pulses of ultraviolet light from a laser measures the Doppler shift from the small amount of light that is scattered back to the instrument from molecules and particles to deliver vertical profiles of the horizontal speed of the winds in the lowermost 26 km of the atmosphere. Tests at ECMWF show short-range forecasts, particularly in the data sparse southern hemisphere and tropics, can be improved when Aeolus data are assimilated (https://www.ecmwf.int/en/about/media-centre/news/2019/tests-show-positive-impact-new-aeolus-wind-data-forecasts). screenshot of text: contain wind vanes to provide wind direction. Among the many types of wind instruments (see referenced texts), the most precise one is the sonic anemometer, which is often used for turbulence measurements. It measures the individual components of the wind (u,v,w) by transmitting sound pulses in opposite directions along three orthogonal paths. Since sound waves travel with the atmospheric medium, a wind component can be obtained by the difference between the two transit times. The temperature can also be calculated by the sum of the two transit times using the speed of sound equation. By convention, most surface stations
October 28, 2025 at 5:35 AM
acfoltzer.net
I thought I knew about most of the tricks, between the GOES satellites, basically every airplane broadcasting outside temperature and pressure, and good old fashioned weather balloons. but this blew my mind, I had no idea
screenshot of the above-linked review: ii GPS radio occultation GPS radio occultation (GPSRO) is an important satellite measurement made from the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC-2), consisting of six satellites in LEO (Fig. 2). GPSRO temperature and moisture profiles are widely used in NWP data assimilation. The highly precise radio occultation (RO) signal measured by Global Navigation Satellite System (GNSS) receivers on the COSMIC satellites record the radio signal amplitude and phase in terms of the transit time, which is affected by the density of the air and the amount of moisture within it. The path of a radio signal propagating between a GPS satellite and a receiver on a LEO satellite is bent as a result of refractive index gradients in the atmosphere. The vertical atmospheric profiles of temperature, humidity and pressure are derived by measuring the degree to which GPS signals bend as they travel through Earth’s atmosphere. As a result, upper-tropospheric to lower-stratospheric temperature profiles and lower-tropospheric humidity profiles can be precisely obtained.
October 28, 2025 at 4:52 AM
acfoltzer.net
@edzitron.com uhh were you also a tween tying up the phone line to hang out on Stratics IRC? I knew there was something familiar about the way you post
screenshot of a text excerpt: What friends Zitron did have as a kid, he found via the computer. His dad had a laptop and a PCMCIA card, and Zitron would dial up and play Ultima Online and EverQuest, finding himself in mIRC chat rooms devoted to the games. “My initial experience with the internet was just kind of wonderment, but
October 27, 2025 at 3:36 PM
acfoltzer.net
Bojangles, my partner's dad's therapy cat
a brown mackerel tabby with unusually large eyes crouches on a wood-veneered cat tree. the photo was taken with a telephoto lens which makes him look extra flat and round
October 12, 2025 at 10:14 PM
acfoltzer.net
fresh off a C-17 from Los Alamitos globe.adsbexchange.com?icao=ae0808&...
Screenshot of the flight track of RCH725, a C-17 Globemaster arriving at Portland International Airport
October 6, 2025 at 12:01 AM
acfoltzer.net
Randy's glad that I'm home
a tuxedo cat, overturned on a wooden floor to soak up a sunbeam, looks at the camera with a sweet, upside-down face
October 5, 2025 at 6:01 PM
acfoltzer.net
I've been enjoying the hell out of getting good enough with gold stake to just toss in some random jokers at the end just for the sticker. I think I have fewer than 20 to go at this point, and will be sad when it's done. When else will I take an ante 8 Midas Mask and Superposition?
a Balatro screenshot showing the shop screen before the final boss on yellow deck with a joker lineup of eternal rental Superposition, Half Joker, Hologram, perishable rental Midas Mask, and perishable Superposition. the first three have gold stickers, Midas has none, and Superposition has green
September 28, 2025 at 11:38 PM
acfoltzer.net
Gutted today to see a small memorial for this guy where his bed would have been. He was always so happy to see me, even though he was so thin that I figured he was much older. Rest in peace Django, I'm sorry I misheard your name.
a small pot of orange flowers below a memorial photo of a tuxedo cat curled up in a bed. it reads: Django 2018-2025
September 28, 2025 at 8:51 PM
acfoltzer.net
ran into an old pal of a cat I haven't seen in months. delightful!
a large brown tabby with white gloves trundles down the sidewalk
September 27, 2025 at 10:25 PM
acfoltzer.net
live from war-ravaged Portland
looking up at a sunny, layered-cloud sky over a quiet corner in a neighborhood of atomic ranches and palm trees
September 27, 2025 at 10:01 PM
acfoltzer.net
the same orange tabby cat as the original post, this time sticking his nose far enough into the camera that it has left the focused region and looks blurry and friendly
September 15, 2025 at 10:50 PM
acfoltzer.net
hi, Ralphie
an orange tabby cat with big green eyes, a tender pink nose, and graceful white whiskers looks down toward the viewer, head cocked at a slight angle
September 13, 2025 at 9:03 PM
acfoltzer.net
a fine harvest today
an orange tabby cat relaxes in a cat bed that's placed on the seat of a fuchsia armchair. he's lit from the side by the sun through the patio door, and is hanging a single massive paw out of the bed and over the edge of the cushion a tuxedo cat relaxes on the back of a couch cushion next to a backyard window. his paws are arranged with fanfare: one across his chest showing off plenty of white , and the other curled up onto itself to his side
August 31, 2025 at 11:46 PM
acfoltzer.net
flew an approach with actual IMC under my own ticket today! I'd done a couple with my CFII but it definitely hits different alone
Ross Island in the Willamette River viewed from above through a gap in a broken cloud layer a smattering of bridges river, and city peek through a broken cloud layer in front of a small airplane wing an overcast layer rolls out in front of Mt St Helens, which is obscured in the distance by haze. high clouds above combine to make the horizon spookily indistinct
August 31, 2025 at 9:34 PM
acfoltzer.net
[fromsoft font] beast posted
tuxedo cat wedged in the lap of a person who's trying to use a Kinesis keyboard while wearing a typewriter-art crow "caw" shirt from Mox
August 29, 2025 at 10:58 PM
acfoltzer.net
uhhhhh that's cool. be on the lookout for fake ATC in central Oregon I guess
Screenshot of an email, reading as follows: The Redmond Airport has recently experienced a person that has been impersonating an Air Traffic Controller on their tower frequency. The individual has attempted to issue instructions and clearances to aircraft on the RDM tower frequency. Redmond Airport is working with FAA and federal law enforcement to identify the person (or persons) responsible for these false ATC instructions. Since the person(s) have not been identified or arrested yet, please be on alert for any unusual ATC communications attempted at PDX, HIO or TTD. There is nothing to suggest that this individual would try to do this same activity at other Oregon airports, but this is always a possibility. If you notice any unusual or suspicious radio activity, please notify your ATCT immediately. Thanks, Stephen Nagy Director, Airport Operations | Port of Portland email: stephen.nagy@portofportland.com phone: (503) 415-6119 cell: (503) 860-6731
August 26, 2025 at 7:20 PM
acfoltzer.net
I have enjoyed reading @flyingmagazine.bsky.social for years, but will never be giving another dollar to a company run by this petulant dipshit www.freightwaves.com/news/the-ai-...
Screenshot of text reading: Firecrown’s embrace of AI has caused concern among some former journalists intimidated by the technology. They’ve misunderstood our stance on incorporating AI and other automated tools into their work, rather than using these tools to make their jobs easier and more productive. This is unfortunate.
August 6, 2025 at 5:22 PM
acfoltzer.net
first (powered) tailwheel time and first grass ops last night in a lovely J-5! the beautiful skies unfortunately courtesy of wildfire smoke
the nose of an orange Piper Cub with an orange-tipped silver propeller sitting in front of tiny air-cooled cylinder heads the spartan forward cockpit of the Cub. it at least has an electrical system, including a starter and a radio! the orange theme remains with the lap belt restraining the stick for parking a beautiful but ominous late-evening sky viewed over the orange fabric wing of the Cub. wildfire smoke in the atmosphere makes the sun look even more orange than the airplane
August 1, 2025 at 3:57 PM
acfoltzer.net
hi, Randy
close-up shot of a tuxedo cat's snout. the distortion of the wide-angle lens kinda makes him look like a horse, with his black nose large and prominent over a big pink-lipped mouth outlined by a stripe of white fur. his eyes are slightly out of focus but look a little crossed
July 24, 2025 at 8:19 PM
acfoltzer.net
many such cases; it's truly heartbreaking
a tuxedo cat sprawled pitifully upside-down on the carpet, looking up at father with eyes most pleading
July 22, 2025 at 1:12 AM
acfoltzer.net
I have been embraced my inner umarell and joined a group of three other balding bearded men to watch the linemen restoring our neighborhood's crucial pole
sunset over a road closed by utility trucks repairing a power pole. the old pole, snapped into at least two pieces is fallen on the wires, while a fresh pole awaits installation a utility worker expresses concrete mix from a white sack suspended by a crane. other workers stand ready to mix and work it into the base of the reinstalled pole indigo night sky, as a lineman climbs with no visible harness up to the top of the new pole, cranes in the foreground waiting to help him do his work
July 14, 2025 at 4:58 AM