JoshMcguigan
Joined 8 years ago
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429
Submissions
83
Member since
Nov 17
https://www.joshmcguigan.com/
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Comment · 2 years ago
Thanks for reading so closely and providing great feedback!
You are totally right on problems 1 and 2 being swapped.
For problem #5, you caught me taking too large a logical leap and making some assumptions there. Turns out the issue is just that cowsay special cases directories called `bin` (and thus treats directories called `sbin` differently)[0].
I just pushed an update to the post correcting both of these.
[0]: https://github.com/cowsay-org/cowsay/blob/d8c459357cc2047235...
Comment · 2 years ago
Thanks for pointing out `package.provided`. It does look like it could be a reasonable way to do this, but I'm not sure how exactly I'd be able to atomically swap GNU coreutils for uutils coreutils using that method?
I think I'd need to add `sys-apps/coreutils` to `package.provided`, then install uutils coreutils while telling Portage to ignore file collisions (because I'd be overwriting GNU coreutils binaries). However, that would have hidden the fact that I would have also been overwriting binaries from other packages (for example `hostname`, which is provided by `sys-apps/net-tools` in Gentoo).
Comment · 3 years ago
For anyone interested in trying out ladder logic, I run a web app that includes a ladder logic simulator in the browser. There is a small set of lessons too.
Sorry it’s desktop only for now. I never got around to figuring out how to make the drag and drop interface work well on mobile screens, although I’d love to.
Comment · 3 years ago
I was using ldd to investigate how nix handles dynamic linking and I was seeing some output I didn't understand. Others were asking about this on stackoverflow[0] but I wasn't able to find any explanation. After a little digging I realized what I was missing: ldd doesn't run the dynamic linker requested by the program (in its elf headers), rather it uses the "standard" dynamic linker in your environment.
[0]: https://stackoverflow.com/questions/34428037/how-to-interpre...
Comment · 3 years ago
“cargo run” does in fact flash the dev board. Cargo allows configuring a custom runner, which is what the embassy examples do [0].
[0]: https://github.com/embassy-rs/embassy/blob/main/examples/stm...
Comment · 3 years ago
Thanks for sharing! I built a similar tool (also in Rust) which allows tracing system and library calls, and could be used for this purpose. I wanted to expose the functionality both as a library and CLI, but for now I’ve only published documentation on using the CLI.
Comment · 3 years ago
What part of SSH takes 6 minutes?
Comment · 3 years ago
I was using I2C for the first time, as part of a brushess ESC project, and had to learn the hard way that internal (to the mcu) pull-up resistors would not work at any reasonable (for my needs) communication speed.
This post compares the performance of the circuit using the internal pull-up resistors against external 1kohm resistors, including plots showing the improved signal quality.
Comment · 3 years ago
Save game compatibility would be very useful for testing if a bug was reproducible in the original game.
Comment · 4 years ago
Thanks for sharing! In the first screenshot of CLI output, it seems to show three buses all being 1 minute out? Am I misreading that?
Comment · 4 years ago
I agree with you, but the article does address this point.
Comment · 4 years ago
You can replace this with a match statement to avoid the unwrap.