VirtualTam's bookmarks

1. SSHFP - Secure SHell FingerPrint DNS Records 2024-10-27

   tags: cryptography/elliptic-curve, network/dns, network/dnssec, network/ssh

   [ permalink ]

   • IANA - DNS SSHFP Resource Record Parameters
   • ssh - How do I generate SSHFP records?
   • Oh SSH-it, What’s My Fingerprint? A Large-Scale Analysis of SSH Host Key Fingerprint Verification Records in the DNS
     • gehaxelt/sshfp-dns-measurement
     • APNIC - Improving SSH’s security with SSHFP DNS records

   RFCs:

   • RFC 4251 - The Secure Shell (SSH) Protocol Architecture
   • RFC 4255 - Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints
2. feed reader best practices | Rachel By The Bay 2024-10-26

   tags: feed, network/http, network/http/header, personal-knowledge/blog, storage/cache, web/syndication

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   Test feed:

   • feed reader score project
   • A sysadmin's rant about feed readers and crawlers
   • Feeds, updates, 200s, 304s, and now 429s
   • So many feed readers, so many bizarre behaviors
   • The feed reader score service is now online

   RFCs:

   • RFC 1945 - Hypertext Transfer Protocol - HTTP/1.0 - If-Modified-Since
   • RFC 7232 - Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests - Entity Tag (ETag)
   • RFC 9110 - HTTP Semantics

   Related:

   • Bret Simmons - NetNewsWire and Conditional GET Issues
   • John Brayton - Feed Polling for Unread Cloud
   • Jeff Kaufman - Looking at RSS User-Agents
   • Chris Siebenmann - The case of the very old If-Modified-Since HTTP header
   • ETag and HTTP caching
   • HTTP Conditional Requests Explained
   • Caching - What takes precedence: the ETag or Last-Modified HTTP header?
3. Blackboard bold - Writing bold symbols on a blackboard by doubling certain strokes 2024-10-23

   tags: mathematics, programming/latex, research, science, text, text/font

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   • Mathematics Meta Stack Exchange - Why do people use blackboard bold here and elsewhere in print?
   • LaTeX Stack Exchange - Looking for a blackboard bold (\mathbb) math font that is thicker than Latin Modern or Computer Modern
   • The LaTeX Font Catalogue - Fonts with math support
   • CTAN - bbold – Sans serif blackboard bold
   • CTAN - amsfonts – TeX fonts from the American Mathematical Society
4. Allow SFTP but disallow SSH? 2023-11-07

   tags: network/ssh, network/ssh/sftp

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   • How To Enable SFTP Without Shell Access on Ubuntu 20.04
   • Can I overwrite a setting within sshd_config with a duplicate setting
5. licensee - A Ruby Gem to detect under what license a project is distributed 2023-10-08

   tags: license, open-source, programming/ruby, source-code-management/github

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   • Open source license usage on GitHub.com
   • Easily discover and navigate to multiple licenses in repositories
   • Declaring multiple licenses in a GitHub project
6. mold - A Modern Linker 2023-09-21

   tags: programming/c, programming/c++, programming/rust

   [ permalink ]

   • Rust - How to use mold linker with cargo?
7. The XY Problem 2023-08-25

   tags: discussion, forum, information, question

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   The XY problem is asking about your attempted solution rather than your actual problem. This leads to enormous amounts of wasted time and energy, both on the part of people asking for help, and on the part of those providing help.

   • https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem
   • https://www.perlmonks.org/?node=XY+Problem
   • http://mywiki.wooledge.org/XyProblem
8. Go Modules Reference: Deprecation 2023-08-21

   tags: programming/go, programming/library

   [ permalink ]

   • go - Difference between Deprecate and retract?
   • go.mod - retract directive
9. go-http-metrics - Modular HTTP middleware to measure HTTP requests 2023-07-26

   tags: network/http, observability/metrics, observability/time-series/prometheus, programming/go

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   • Expose Prometheus metrics in a separate port in golang
10. LWN - What every programmer should know about memory 2023-07-22

    tags: hardware, hardware/cpu, hardware/ram, memory, memory/cache, performance

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    • What every programmer should know about memory (Full PDF version) Mirror
    • Part 1: Introduction & Commodity Hardware Today
    • Part 2: CPU Caches
    • Part 3: Virtual Memory
    • Part 4: NUMA support
    • Part 5: What programmers can do
    • How much of ‘What Every Programmer Should Know About Memory’ is still valid?
11. Create an advanced search engine with PostgreSQL 2023-07-14

    tags: database/postgresql, programming/sql, search-engine, text

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    • Postgres Full Text Search vs the rest (MeiliSearch, OpenSearch/Elasticsearch, SQlite FTS, Typesense)
    • Optimizing Full Text Search with Postgres tsvector Columns and Triggers
    • Word separators for Postgres full text search with Rails
    • Using PostgreSQL Full Text Search With Golang
    • PostgreSQL: Full Text Search
    • PostgreSQL: Preferred Index Types for Text Search
12. Kubectl Cheat Sheet 2023-07-12

    tags: command-line, linux/container/kubernetes, programming/json

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    • How to filter pods by partial name
    • Field Selectors
    • JSONPath support
    • How to Make Kubectl Jsonpath Output On Separate Lines
    • Use Port Forwarding to Access Applications in a Cluster
13. jackc/pgx - PostgreSQL Driver and Toolkit 2023-07-04

    tags: concurrency, database/postgresql, programming/go

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    • Getting started with pgx
    • https://donchev.is/post/working-with-postgresql-in-go-using-pgx/
    • jackc/pgx/v5/pgtype - Map between all common base types directly between Go and PostgreSQL
    • jackc/pgx/v5/pgxpool - Concurrency-safe connection pool for pgx
    • scany/v2/pgxscan - Scan data into Go structs and other composite types
    • Bulk INSERT in Postgres in GO using pgx
    • Postgres table batch updates using golang pgxpool not reflected in database
    • pgx.Conn can see uncommitted changes made from a pgx.Tx - TL;DR use pgxpool for concurrency-safe transactions
    • Not clear if caller is required to close in case of QueryRow or if QueryRow properly closes in case of error
14. PSReadLine - A bash inspired readline implementation for PowerShell 2023-06-30

    tags: command-line, microsoft/windows, programming/powershell

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    • Use CTRL + D to exit and CTRL + L to cls in Powershell console
15. Solder Flux 2023-04-30

    tags: diy, solder

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    • How does flux work, chemically, and what are the products?
    • Solder Flux Classifications
    • Solder Flux Basics
16. go - Access out of loop value inside golang template's loop 2023-02-27

    tags: programming/go, programming/html

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    • https://discourse.gohugo.io/t/templates-multiple-parameters/600
    • https://stackoverflow.com/questions/17284222/in-go-templates-accessing-parent-global-pipeline-within-range
    • https://stackoverflow.com/questions/14800204/in-a-template-how-do-you-access-an-outer-scope-while-inside-of-a-with-or-rang?rq=1
    • https://go.dev/play/p/5Hiajt4H2Z5
17. Git - git-for-each-ref Documentation 2023-02-25

    tags: command-line, source-code-management/git

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    • https://github.com/git/git/blob/c25fba986bfc737d775430d290b93136d390e067/t/t6300-for-each-ref.sh#L79-L216
    • https://stackoverflow.com/questions/21256861/what-are-valid-fields-for-the-format-option-of-git-for-each-ref
18. Postfix, iPhone, Apple Mail and the reject_unknown_helo_hostname parameter 2023-01-28

    tags: email/postfix, mobile/ios, network/dns

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    I'd get a better behaved mail client. — Hu on Gentoo Forums

    • http://www.postfix.org/postconf.5.html#reject_invalid_helo_hostname
    • https://serverfault.com/questions/575539/postfix-helo-command-rejected-host-not-found
    • https://serverfault.com/questions/527541/postfix-whitelist-host-for-specific-sender
    • https://serverfault.com/questions/922935/why-does-postfix-say-helo-command-rejected-host-not-found-when-dig-finds-the
    • https://discussions.apple.com/thread/3120175
    • https://forums.gentoo.org/viewtopic-p-8604630.html?sid=a666f84af3d663d43b4c72a5b82115c4
19. reMarkable 2 - 3rd-party accessories and homebrew software 2023-01-21

    tags: e-ink, e-reader, linux, network/ssh, programming/c, programming/c++, programming/go, user-interface/qt

    [ permalink ]

    Stylus:

    • https://remarkablewiki.com/tech/stylus
    • https://www.joshualowcock.com/guide/remarkable-2-compatible-pens-remarkable-marker-alternatives/
    • https://www.joshualowcock.com/guide/how-to-install-the-lamy-al-star-pen-button-eraser-hack-on-the-remarkable-2/
    • https://www.reddit.com/r/RemarkableTablet/comments/nvtwt8/alternative_pen_which_is_compatible_with/

    Case:

    • https://www.joshualowcock.com/guide/remarkable-2-folio-remarkable-case-alternative/

    Guides:

    • https://www.meganwalker.me.uk/2021/01/installing-remux-koreader-on-the-remarkable-2/
    • https://www.reddit.com/r/RemarkableTablet/comments/lzuxti/experience_using_the_remarkable_2_as_a_linux/
    • https://www.simplykyra.com/category/remarkable/

    System:

    • https://remarkablewiki.com/tech/ssh
    • • https://www.reddit.com/r/RemarkableTablet/comments/10ymr95/til_you_can_request_that_rm_not_use_your_private/

    Usage:

    • https://www.reddit.com/r/RemarkableTablet/comments/jl3tue/is_anybody_else_having_trouble_turning_pages_on/

    Software:

    • https://eeems.website/toltec/
    • https://www.reddit.com/r/RemarkableTablet/comments/aqfflg/xochitl_question/
    • https://github.com/reMarkable
    • https://github.com/reHackable/awesome-reMarkable
    • https://github.com/isaacwisdom/RemarkableLamyEraser
    • https://github.com/ddvk/remarkable2-framebuffer
    • https://github.com/ddvk/rmfakecloud
    • https://github.com/ddvk/remarkable-hacks
    • https://github.com/ddvk/remarkable-stylus
    • https://github.com/juruen/rmapi
    • https://rmkit.dev/apps/remux
    • https://github.com/dps/remarkable-keywriter

    Articles:

    • https://rmkit.dev/eink-is-so-retropunk/
20. Audio-only YouTube player 2022-12-22

    tags: audio, command-line, google/youtube, video

    [ permalink ]

    • https://unix.stackexchange.com/questions/298086/play-youtube-playlist-with-youtube-dl-with-shuffling-or-repeat
    • https://forum.porteus.org/viewtopic.php?f=39&t=10231