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Thu Nov 16 2023 (edited)

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Nov 16 2023 14:41 UTC

130/₅₀ words

43s read

An actual but where did my Linux memory go command;
This program (repositories) came in handy while helping someone resolve an oom problem. Want to see memory usage and shared memory, perhaps sorted by swap?

shell

smem -s swap -kta
smem --sort swap --abbreviate --totals --autosize

What about on other categories running a --sort?

  
  
    text
  
  
  swap     (amount of swap space consumed ignoring sharing)
command  (process command line)
maps     (total mappings count)
name     (process name)
pid      (process id #)
user     (process owner)
pss      (proportional set size including sharing)
rss      (resident set size ignoring sharing)
uss      (unique set size)
vss      (virtual set size; total virtual memory mapped)

Bonus: A filesystem usage command to catch /tmp/ and tmpfs (temporary file storage) abusers;

  
    shell
  
  df -h | grep tmpfs
df --human-readable | grep tmpfs

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Oct 11 2023

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Oct 11 2023 00:10 UTC

103/₅₀ words

34s read

Text fragments are a Chromium feature from a couple years ago. They (#:~:text=) emulate CTRL + F or window.find() from a URL. I experimented in times past with a snippet–like approach using <mark> with URL encoded terms on id + :target logic, such that clicking this link highlights the paragraph below.

text

https://web.dev/text-fragments/#:~:text=Text%20Fragments%20let%20you

The article says ‘boldly link’, but personally fragments (any) work best on infrequently changing content. Long URLs do text fragments make. Annoying? Who knows/cares? They are not everywhere yet (Firefox). On another tangent; I discovered that hugo did have the urlquery function available (that nice blog saved me code surfing).

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Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Mon Jun 12 2023 (edited)

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Jun 12 2023 22:57 UTC

88/₅₀ words

29s read

It’s amusing the sort of easter eggs found hiding in open source code. I’ve been playing around with farzher/fuzzysort, a fast fuzzy search picked up from the Stack Overflow fuzzy search tag.

On line 27 and 40 there’s a horizontal off–screen scroll easter egg.

  
    javascript
  
  if(search=='farzher')return{target:"farzher was here (^-^*)/",score:0,_indexes:[0]}
if(search=='farzher')return[{target:"farzher was here (^-^*)/",score:0,_indexes:[0],obj:targets?targets[0]:NULL}]

Yes, I happen to be one of those who read the code eventually. And obviously, it goes without saying, no one person reads all the code. But it’s the Internet, can’t be too sure ;)

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Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Tue May 30 2023

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May 30 2023 20:48 UTC

58/₅₀ words

19s read

Distributed is the new centralized.

You can never be too sure anymore..

  
  
    shell
  
  
  $ git remote -v
all             cgit@thedroneely.com:thedroneely/dotfiles (fetch)
all             git@codeberg.org:tdro/dotfiles.git        (push)
all             git@github.com:tdro/dotfiles.git          (push)
all             cgit@thedroneely.com:thedroneely/dotfiles (push)
all             git@gitlab.com:tdro/dotfiles.git          (push)
codeberg.org    git@codeberg.org:tdro/dotfiles.git        (fetch)
codeberg.org    git@codeberg.org:tdro/dotfiles.git        (push)
github.com      git@github.com:tdro/dotfiles.git          (fetch)
github.com      git@github.com:tdro/dotfiles.git          (push)
gitlab.com      git@gitlab.com:tdro/dotfiles.git          (fetch)
gitlab.com      git@gitlab.com:tdro/dotfiles.git          (push)
thedroneely.com cgit@thedroneely.com:thedroneely/dotfiles (fetch)
thedroneely.com cgit@thedroneely.com:thedroneely/dotfiles (push)

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Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed May 24 2023

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May 24 2023 00:32 UTC

115/₅₀ words

38s read

There’s this cool python script chromexup that allows declaratively managing chromium based extensions.

Basically setup the configuration in the right place, find the extension id from the Chrome web store URL and run chromexup.

  
  
    ini
  
  
  [main]
branding           = chromium
remove_orphans     = True
parallel_downloads = 4

[extensions]
BlankNewTabPage   = jaadjnlkjnhohljficgoddcjmndjfdmi
JavaScriptToggle  = cdcgbgnfhhdmdkallfmlachogpghifgf
NoHistory         = ljamgkbcojbnmcaonjokopmcblmmpfch

Side note: NoHistory is good for disabling history (Firefox has options). If the history/bookmarks database gets too large, funky auto–suggestion stuff can happen (100% processor usage). imo, it’s best not to trust browsers storing bookmarks anyway and use an independent tool/method. The less data coupled to browsers the better — at least if you’re like me and swap browsers regularly.

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Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri May 5 2023

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May 5 2023 23:07 UTC

61/₅₀ words

20s read

Different words similar meaning? --references is NixOS speak for direct package dependencies. --requisites list all. These work with the nix-store command.

  
    shell
  
  $ readlink --canonicalize "$(type -P which)"
/nix/store/r78jv9xgxnvsm5vpasf5ldkc28pkri6r-which-2.21/bin/which

$ nix-store --query --references /nix/store/r78jv9xgxnvsm5vpasf5ldkc28pkri6r-which-2.21
/nix/store/4nlgxhb09sdr51nc9hdm8az5b08vzkgx-glibc-2.35-163

which directly depends on glibc. Swap --references to --referrers for paths pointing to which.

On Guix, list/draw dependencies with guix graph.

shell

guix graph --type=references which

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Sat Jan 21 2023

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Jan 21 2023 13:53 UTC

191/₅₀ words

64s read

A NixOS configuration for a working sound driver on an A1418 Cirrus Logic CS8409/CS42L83.

  
  
    nix
  
  
  { stdenv, lib, fetchgit, linuxKernel, kernel ? linuxKernel.kernels.linux_5_15
, version ? "d0d785dc1859b09299bde6d0f1d6786a0d610e7f" }:

stdenv.mkDerivation {

  inherit version;
  name = "sna-hda-codec-cs8409-${version}-module-${kernel.modDirVersion}";

  # Upstream: https://github.com/davidjo/snd_hda_macbookpro

  src = fetchgit {
    url = "https://github.com/egorenar/snd-hda-codec-cs8409.git";
    rev = version;
    sha256 = "sha256-0UeoERcYpM+ojeZ7dDIE3ruTIoHkkC+s7FcoEVUTR0w=";
  };

  hardeningDisable = [ "pic" ];
  nativeBuildInputs = kernel.moduleBuildDependencies;

  NIX_CFLAGS_COMPILE = [ "-g" "-Wall" "-Wno-unused-variable" "-Wno-unused-function" ];

  makeFlags = kernel.makeFlags ++ [
    "INSTALL_MOD_PATH=$(out)"
    "KERNELRELEASE=${kernel.modDirVersion}"
    "KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
  ];

  postPatch = ''
    printf '
    snd-hda-codec-cs8409-objs := patch_cs8409.o patch_cs8409-tables.o
    obj-$(CONFIG_SND_HDA_CODEC_CS8409) += snd-hda-codec-cs8409.o

    KBUILD_EXTRA_CFLAGS = "-DAPPLE_PINSENSE_FIXUP -DAPPLE_CODECS -DCONFIG_SND_HDA_RECONFIG=1"

    KERNELRELEASE ?= $(shell uname -r)
    KERNEL_DIR    ?= /lib/modules/$(KERNELRELEASE)/build
    PWD           := $(shell pwd)

    default:
    	make -C $(KERNEL_DIR) M=$(PWD) CFLAGS_MODULE=$(KBUILD_EXTRA_CFLAGS)

    install:
    	make -C $(KERNEL_DIR) M=$(PWD) modules_install
    ' \
    > Makefile

    sed --in-place 's|<sound/cs42l42.h>|"${linuxKernel.kernels.linux_6_0.dev}/lib/modules/${linuxKernel.kernels.linux_6_0.modDirVersion}/source/include/sound/cs42l42.h"|'  patch_cs8409.h
    sed --in-place 's|hda_local.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_local.h|'                                                      patch_cs8409.h
    sed --in-place 's|hda_jack.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_jack.h|'                                                        patch_cs8409.h
    sed --in-place 's|hda_generic.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_generic.h|'                                                  patch_cs8409.h
    sed --in-place 's|hda_auto_parser.h|${kernel.dev}/lib/modules/${kernel.modDirVersion}/source/sound/pci/hda/hda_auto_parser.h|'                                          patch_cs8409.h
  '';

  meta = { platforms = lib.platforms.linux; };
}

Then build it as a extra/custom kernel module. The results of stumbling upon yet another troublesome device…

  
  
    nix
  
  
  { pkgs, ... }:

{
  boot = {
    extraModulePackages = [
      (pkgs.callPackage ../packages/snd-hda-cs8409/default.nix {
        kernel = pkgs.linux_5_15;
      })
    ];
  };
}

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Fri Jan 6 2023 (edited)

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Jan 6 2023 03:23 UTC

145/₅₀ words

48s read

My default nix configuration on NixOS.

This configuration is more for building/debugging stuff and caching with nix-serve. Usually my package version is locked since different versions of nix can have some effects.

  
  
    nix
  
  
  { config, ... }:

{
  nix = {
    package = (import ../versions.nix).nix_2_17 { inherit config; };
    settings = {
      log-lines = 25;                                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-log-lines
      fallback = true;                               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-fallback
      tarball-ttl = 0;                               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-tarball-ttl
      show-trace = true;                             # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-show-trace
      connect-timeout = 5;                           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-connect-timeout
      auto-optimise-store = true;                    # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-auto-optimise-store
      narinfo-cache-negative-ttl = 0;                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-narinfo-cache-negative-ttl
      narinfo-cache-positive-ttl = 0;                # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-narinfo-cache-positive-ttl
      builders-use-substitutes = true;               # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-builders-use-substitutes
      min-free = 268435456;                          # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-min-free (256 MB in Bytes)
      max-free = 1073741824;                         # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-max-free (1 GB in Bytes)
      allowed-users = [ "root" "@wheel" ];           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-allowed-users
      trusted-users = [ "root" "@wheel" ];           # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-trusted-users
      experimental-features = "nix-command flakes";  # https://nixos.org/manual/nix/unstable/command-ref/conf-file.html#conf-experimental-features
    };
  };
}

#gists #linux

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Dec 14 2022

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Dec 14 2022 01:58 UTC

68/₅₀ words

23s read

It’s kinda neat how CSS animation rules are sort of simple in their construction. imo, rules could be made even simpler if the animation-delay property also allowed delays between iterations/intervals instead of at the start only. Interval delays could allow for writing drastically less key frame rules.

  
    css
  
  text-animation[hang] {
  animation: tilt-rightward 1.3s infinite, tilt-leftward 1.8s infinite;
}

#gists #webdev

Another wandering soul whispering into the void. If you are looking for my blog you are in the wrong place. The profile and header pictures are brought to you by cdd20.

tdro

Wed Sep 28 2022 (edited)

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