VirtualTam's bookmarks

61. Coding Standards for pure C (not C++) - Stack Overflow

    2019-11-07
    guidelines programming/c

    Permalink
    • https://stackoverflow.com/questions/415452/object-orientation-in-c
    • https://sites.google.com/site/cinterfacesimplementations/
    • http://web.archive.org/web/20190125125043/http://homepages.inf.ed.ac.uk/dts/pm/Papers/nasa-c-style.pdf
    • https://www.maultech.com/chrislott/resources/cstyle/
    • https://wiki.sei.cmu.edu/confluence/display/c/SEI+CERT+C+Coding+Standard
62. Docker & UFW

    2019-10-24
    linux/container/docker linux/iptables network security ufw

    Permalink
    • https://github.com/moby/moby#4737
    • https://github.com/docker/for-linux/issues/690
    • https://stackoverflow.com/questions/30383845/what-is-the-best-practice-of-docker-ufw-under-ubuntu
    • https://www.mkubaczyk.com/2017/09/05/force-docker-not-bypass-ufw-rules-ubuntu-16-04/
    • https://www.techrepublic.com/article/how-to-fix-the-docker-and-ufw-security-flaw/
    • https://www.linux.com/news/how-fix-docker-and-ufw-security-flaw/
    • https://svenv.nl/unixandlinux/dockerufw/
    • https://blog.viktorpetersson.com/2014/11/03/the-dangers-of-ufw-docker.html
    • https://news.ycombinator.com/item?id=27613217
63. prometheus-cpp: Prometheus Client Library for Modern C++

    2019-10-21
    bazel cmake observability observability/time-series/prometheus programming/c programming/c++

    Permalink
    • https://jupp0r.github.io/prometheus-cpp/annotated.html
    • https://stackoverflow.com/questions/52883657/usage-guidelines-for-prometheus-c
    • https://slides.com/juppmuller/deck-17#/
64. automation - Cron job to run on the last day of the month - Stack Overflow

    2019-09-23
    calendar linux schedule/cron time

    Permalink
    • https://backreference.org/2010/04/05/last-day-of-month-cron-job/
    • https://unix.stackexchange.com/questions/149474/how-can-i-start-a-cronjob-1-hour-later-each-day
65. AWS | Enable Enhanced Networking with Elastic Network Adapters for vintage OS AMIs

    2019-09-17
    chroot cloud-computing/aws linux linux/debian linux/kernel virtualization virtualization/xen

    Permalink

    Paravirtual (PV) to Hardware Virtual Machine (HVM):

    • https://stackoverflow.com/questions/24330721/amazon-ec2-how-to-convert-an-existing-pv-ami-to-hvm

    ENA support:

    • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html
    • https://forums.aws.amazon.com/thread.jspa?threadID=166135
    • https://aws.amazon.com/premiumsupport/knowledge-center/boot-error-linux-m5-c5/
    • https://bugs.centos.org/view.php?id=14107
    • https://ygrene.tech/how-to-enable-ena-support-for-aws-amis-in-5-steps-and-make-your-bamboo-remote-jobs-really-fast-f2a4254a9955

    Build Debian AMIs from scratch:

    • https://bootstrap-vz.readthedocs.io/en/master/
    • https://github.com/andsens/bootstrap-vz
    • https://www.slideshare.net/JamesBromberger/debian-cloud-building-the-debian-amis
    • https://blog.james.rcpt.to/2012/12/06/official-debian-images-on-amazon-web-services-ec2/

    Squeeze:

    • https://lists.debian.org/debian-cloud/2013/02/msg00023.html

    Wheezy:

    • https://lists.debian.org/debian-cloud/2014/10/msg00009.html
    • https://lists.debian.org/debian-cloud/2014/11/msg00000.html

    Boot to chroot:

    • https://unix.stackexchange.com/questions/85714/boot-into-a-chroot
    • https://wiki.debian.org/chroot
    • https://wiki.debian.org/Debootstrap
    • https://superuser.com/questions/384437/booting-linux-system-from-chroot-is-there-a-better-way-to-do-this/384457#384457
    • https://github.com/lemonsqueeze/boot-chroot
66. Question: Moving Around in JSON Files : vim

    2019-09-10
    editor/vim programming/json text

    Permalink
    • https://stackoverflow.com/questions/4339951/is-there-a-vim-command-to-move-the-cursor-to-the-parent-bracket
    • https://stackoverflow.com/questions/46227889/is-there-a-vim-command-to-move-the-cursor-to-the-parent-square-bracket
67. 0.30000000000000004

    2019-09-09
    approximation arithmetic float hardware/ram memory programming

    Permalink
    • https://en.wikipedia.org/wiki/Floating-point_arithmetic
    • https://standards.ieee.org/standard/754-2008.html
    • https://stackoverflow.com/questions/588004/is-floating-point-math-broken/588014#588014
    • https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html
68. Amazon Web Services | Auto-scale bind to an elastic IP?

    2019-09-09
    cloud-computing cloud-computing/aws network network/firewall network/ip

    Permalink

    Use case:

    • Set up an AutoScaling Group with exactly 1 min/max/desired instance
    • Attach an Elastic IP to the active instance

    Usually for interoperability reasons and/or IP-based network rules (80's firewall anyone?).

    • https://stackoverflow.com/questions/34849360/how-to-assign-eip-to-autoscaling-group-of-vpc-in-cloudformation-template
    • https://www.reddit.com/r/aws/comments/6k3gb2/auto_assign_eip/
69. Microsoft Excel as a Programming Language

    2019-09-02
    excel microsoft program programming-language spreadsheet turing

    Permalink
    • https://news.ycombinator.com/item?id=429505
    • https://www.quora.com/Can-MS-Excel-be-considered-a-functional-programming-language
    • http://www.felienne.com/archives/2974
    • https://news.ycombinator.com/item?id=6416631
    • https://pt.stackoverflow.com/questions/99642/o-excel-%c3%a9-uma-linguagem-de-programa%c3%a7%c3%a3o
70. JVM threads and resource usage

    2019-08-01
    concurrency/threading jvm linux programming/java system

    Permalink
    • https://stackoverflow.com/questions/34452302/how-to-increase-maximum-number-of-jvm-threads-linux-64bit
    • https://stackoverflow.com/questions/10487840/java-limiting-resource-usage
71. The GNU Privacy Handbook - Key Management - Subkeys

    2019-07-30
    cryptography/pgp cryptography/pgp/gnupg source-code-management/git

    Permalink
    • What exactly is a subkey?
    • Improve the Security of Your OpenPGP Key by Using Subkeys
    • PGP - Why have separate encryption subkey
    • Using OpenPGP subkeys in Debian development
    • PSA: want to use a new subkey to sign your commits?
72. Diffie-Hellman Key Exchange

    2019-06-24
    cryptography cryptography/elliptic-curve cryptography/encryption cryptography/public-key-infrastructure security

    Permalink
    • https://security.stackexchange.com/questions/35471/is-there-any-particular-reason-to-use-diffie-hellman-over-rsa-for-key-exchange
    • https://security.stackexchange.com/questions/45963/diffie-hellman-key-exchange-in-plain-english
    • https://en.wikipedia.org/wiki/Elliptic-curve_Diffie%E2%80%93Hellman
    • https://en.wikipedia.org/wiki/Forward_secrecy
73. Validating URLs in Go

    2019-05-30
    data network/url programming/go validator

    Permalink
    • https://golang.org/pkg/net/url/#Parse
    • https://golang.org/pkg/net/url/#ParseRequestURI
    • https://stackoverflow.com/questions/31480710/validate-url-with-standard-package-in-go
    • https://stackoverflow.com/questions/25747580/ensure-a-uri-is-valid
    • https://github.com/asaskevich/govalidator
74. GPU monitoring with Prometheus

    2019-04-27
    hardware/gpu nvidia observability observability/grafana observability/time-series/prometheus

    Permalink
    • https://stackoverflow.com/questions/8223811/top-command-for-gpus-using-cuda
    • https://github.com/wookayin/gpustat
    • https://github.com/zhebrak/nvidia_smi_exporter (Go)
    • https://github.com/tankbusta/nvidia_exporter (C, Go)
    • https://github.com/teh/nvidia-smi-prometheus (Haskell)
    • https://github.com/gsperry2011/prometheus/blob/master/nvidia/ewbf_scraper.py (Python)
    • https://grafana.com/dashboards/1500
75. Tuning PHP-FPM for high traffic

    2019-03-29
    network/http network/http-server/nginx performance php-fpm programming/php

    Permalink
    • https://haydenjames.io/php-fpm-tuning-using-pm-static-max-performance/
    • https://www.if-not-true-then-false.com/2011/nginx-and-php-fpm-configuration-and-optimizing-tips-and-tricks/
    • http://www.softwareprojects.com/resources/programming/t-optimizing-nginx-and-php-fpm-for-high-traffic-sites-2081.html
    • https://www.php.net/manual/en/install.fpm.configuration.php
    • https://serverfault.com/questions/773216/php-error-pool-www-seems-busy-you-may-need-to-increase-pm-start-servers-or-p
    • https://serverfault.com/questions/874642/configuring-nginx-php-fpm-for-high-traffic-load
76. Chris's Wiki :: blog/spam/AutorepliesWhatNot - What email messages to not send autoreplies to

    2019-03-07
    email email/spam header

    Permalink
    • https://tools.ietf.org/html/rfc3834
    • https://superuser.com/questions/481645/will-outlook-out-of-office-reply-go-to-mailing-lists
77. php - What is Doctrine hydration? - Stack Overflow

    2019-02-26
    array database programming/php programming/php/doctrine

    Permalink

    TL;DR: Hydrators are used to map arrays to objects, and vice-versa

    • https://www.doctrine-project.org/projects/doctrine-phpcr-odm/en/latest/reference/query.html#hydration-modes
    • https://codereview.stackexchange.com/questions/222/php-doctrine-array-hydration
    • https://github.com/doctrine/DoctrineModule/blob/master/docs/hydrator.md
    • https://framework.zend.com/manual/2.4/en/modules/zend.stdlib.hydrator.html
    • https://github.com/phpro/zf-doctrine-hydration-module
    • https://github.com/zendframework/zend-hydrator
78. What is Syslog: Daemons, Message Formats and Protocols - Sematext

    2019-02-05
    linux observability/logging sysadmin system text

    Permalink
    • https://serverfault.com/questions/692309/what-is-the-difference-between-syslog-rsyslog-and-syslog-ng
79. xpadneo | Advanced Linux Driver for Xbox One Wireless Controller (shipped with Xbox One S)

    2019-02-01
    game gamepad hardware linux network/wireless/bluetooth wireless

    Permalink
    • https://github.com/atar-axis/xpadneo/
    • https://aur.archlinux.org/packages/xpadneo-dkms-git/
    • https://www.gamingonlinux.com/articles/xpadneo-is-an-advanced-linux-driver-for-the-xbox-one-s-wireless-gamepad.11875
    • https://askubuntu.com/questions/783587/how-do-i-get-an-xbox-one-controller-to-work-with-16-04-not-steam
    • https://www.reddit.com/r/linux_gaming/comments/63t87i/connecting_xbox_one_s_controllers_with_bluetooth/
    • https://github.com/paroj/xpad
    • https://github.com/360Controller/360Controller
80. Login throttling in PHP

    2019-01-18
    bruteforce ddos programming/php security security/authentication web

    Permalink
    • http://www.omniceps.com/stop-brute-force-attacks-php-throttling/
    • http://miftyisbored.com/a-complete-tutorial-on-login-throttling-and-recaptha-with-laravel-5-3/
    • https://mattstauffer.com/blog/login-throttling-in-laravel-5.1/
    • http://codedevelopr.com/articles/throttle-user-login-attempts-in-php/
    • https://stackoverflow.com/questions/9153554/best-way-to-implement-ban-after-too-many-login-attempts
    • https://stackoverflow.com/questions/2090910/how-can-i-throttle-user-login-attempts-in-php
    • https://stackoverflow.com/questions/549/the-definitive-guide-to-form-based-website-authentication#477585