seodisparate
Joined 9 years ago
Karma
106
Submissions
25
Member since
May 1
Recent submissions
Comment · 1 year ago
One can use C's `cleanup` attribute like a defer. https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attribute...
The function signature is `void(MyType*)` if it is used like:
__attribute__((cleanup(MyTypeCleanupFunction)))
MyType myType;
Comment · 2 years ago
Or using .ssh/config since entries in there act like hostnames:
# ~/.ssh/config
Host github_ssh
HostName github.com
User git
IdentityFile ~/.ssh/my_github_key
> git remote add github github_ssh:Username/RepoName.git
Comment · 2 years ago
Reminds me of https://goshdarnfunctionpointers.com/ which has helped in some cases.
Comment · 2 years ago
Isn't there `proc` on Linux systems?
Get the pid of the process you want to inspect, and while its running, execute `ls -lh /proc/<pid>/fd/`. It will list the open file descriptors for that process.
Comment · 2 years ago
One could use `printf 'first\0second'` in the Bash shell as an example of making a "string" with null embedded into it, but you can't store that in a Bash variable.
$ TEST_VAR="$(printf 'first\0second')"
bash: warning: command substitution: ignored null byte in input
Comment · 2 years ago
Similarly, I have a somewhat simple demo made for my website that is C++/Emscripten/Raylib. It's open source (MIT License) and you can grok the code here https://git.seodisparate.com/stephenseo/jumpartifact.com_dem... and check out the demo itself from the link within that page.
Comment · 3 years ago
https://choosealicense.com/ is a good resource that lists a bunch of licenses explained.
Comment · 3 years ago
I made a C++ project[1] (using OpenCL and blue noise) to generate dithered images/video for a course project (the course taught how to program for the GPU). If anyone wants to just jump straight into generating dithered images, you can try it out yourself. (It only works if OpenCL is configured for your system. It works on my desktop with a GPU and does not work on my laptop without a separate GPU.)
EDIT: Oh right, it also requires FFmpeg to be installed as it uses it. And libpng. And CMake. And PkgConfig.
[1]: https://github.com/Stephen-Seo/EN605.617.81.FA21_StephenSeo_...
Comment · 4 years ago
You can use a GPG key stored on a YubiKey with openssh, but with some caveats:
1. gpg-agent must act as your ssh-agent (which means ssh-agent should be disabled and replaced by gpg-agent).
2. If using `pinentry-curses` (YubiKey usually permits access to the contained GPG key via the use of a pin), you must have `export GPG_TTY=$(tty)` (or your shell's equivalent of setting the GPG_TTY environment value to the output of `tty`).
3. You can fetch the public key of your GPG key with `ssh-add -L` (gpg-agent must be acting as your ssh-agent, and the YubiKey with the GPG key has to be plugged in).
4. You must have the line `enable-ssh-support` in your `$GNUPGHOME/gpg-agent.conf`.
I used a guide[1] to set up a GPG key on to a YubiKey, and for those who don't want to use GPG, the guide also has a section[2] about just using an SSH key as well.
Comment · 4 years ago
[1] discusses firejail running as root:
> For a server, the process exposed to the outside world runs as an unprivileged user (unbound or nobody). The process is started by a separate process running as root (as explained by @Ferroin above). The starting process is never exposed to outside.
> The same is true for Firejail. By the time the unprivileged server process starts, Firejail is already sleeping.
And I think Docker has a similar problem as mentioned in the "warning" section in [2]:
> Warning: Anyone added to the docker group is root equivalent because they can use the docker run --privileged command to start containers with root privileges. For more information see [3] and [4].
Comment · 4 years ago
As a lightweight alternative to Docker-based (or any container-based) solutions: Try firejail. You can set up a directory that will be the "home" of the sandboxed application you're running, then you can do something like `firejail --private="${HOME}/my_firefox_jail" firefox`. There are built-in profiles for many applications already, and you can customize them (by adding `.local` files, not editing the existing `.profile` files). See the following link for details.
Comment · 4 years ago
Someone else on HN earlier posted their QR-code scanning Android app[1], which I've been using because it doesn't automatically follow URLs but displays the raw text of the QR code. It's been helpful for me, especially when I've been setting up QR codes for a new wireless router.
Comment · 4 years ago
Is it too old-fashioned of me to prefer IRC? Discord has its place, but I favor IRC.
Comment · 4 years ago
I use the `rustup` package instead of the `rust` package to manage a local installation of rust. This graph seems to show installations of the `rust` package, but I don't think that accounts for `rustup`. `rustup` is recommended on Rust's own website ( https://www.rust-lang.org/learn/get-started ) and some users may have installed `rustup` via the bootstrap script instead of from Arch's own package repository. So I guess there's some additional variables that may not be accounted for regarding `rust`.
EDIT: Try this: https://pkgstats.archlinux.de/compare/packages#packages=dmd,...
Comment · 4 years ago
Been using Linode since 2019. Service worked as expected (worked well), and I hope that won't change after this. If I had to move, I'd have to go through the pain of setting up my website(s) again, but at least I have backups, so it's just a matter of time spent getting set up again..
https://github.com/Stephen-Seo