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skyzyx / homebrew-gnubin.md
Last active April 24, 2024 00:04
Using GNU command line tools in macOS instead of FreeBSD tools

macOS is a Unix, and not built on Linux.

I think most of us realize that macOS isn't a Linux OS, but what that also means is that instead of shipping with the GNU flavor of command line tools, it ships with the FreeBSD flavor. As such, writing shell scripts which can work across both platforms can sometimes be challenging.

Homebrew

Homebrew can be used to install the GNU versions of tools onto your Mac, but they are all prefixed with "g" by default.

All commands have been installed with the prefix "g". If you need to use these commands with their normal names, you can add a "gnubin" directory to your PATH from your bashrc.

@skyzyx
skyzyx / rca.md
Last active December 8, 2022 19:32
Internal (not customer-facing) Root Cause Analysis (aka Post-Mortem) template

[20XX-XX-XX] Service Name downtime

  • This is a blameless Post-mortem.
  • We will not focus on the past events as they pertain to "could've", "should've", etc.
  • All follow up action items will be assigned to a team/individual before the end of the meeting.
  • If the item is not going to be top priority leaving the meeting, don't make it a follow up item.

| | |

@skyzyx
skyzyx / README.md
Last active May 12, 2022 20:24
SPF records

Instructions

Expectations

  • Verbalize your thoughts as you solve the problem. How you arrived at the solution is just as important as the solution itself.

  • Ask questions if you're not sure about something, rather than guessing.

  • Read the instructions, which consist of this entire page.

@skyzyx
skyzyx / gist:9fb1a4d2cd1d2537f414aa709d04e279
Created October 14, 2018 08:10
Downsample to AAC 2-channel audio
ffmpeg -i $INPUT -c:v copy -af "pan=stereo|FL < 1.0*FL + 0.707*FC + 0.707*BL|FR < 1.0*FR + 0.707*FC + 0.707*BR" -vol 512 -movflags +faststart $OUTPUT
@skyzyx
skyzyx / ecs-host-status.sh
Created September 15, 2018 02:52
Check the launch status of the underlying EC2 instances in an ECS cluster.
##
# Requires:
# * AWS Unified CLI Tools
# * jq
##
cluster_name="name-of-ecs-cluster"
aws ec2 describe-instance-status \
--instance-ids $(
@skyzyx
skyzyx / reflog.sh
Created September 4, 2018 20:09
Prune large, already-deleted files from your Git history.
wget http://repo1.maven.org/maven2/com/madgag/bfg/1.13.0/bfg-1.13.0.jar -O ~/bin/bfg.jar
git clone git@github.com:{org}/{repo}.git
cd {repo}
java -jar ~/bin/bfg.jar --strip-blobs-bigger-than 100k --protect-blobs-from {branch}
git reflog expire --expire=now --all && git gc --prune=now --aggressive
git push --force
@skyzyx
skyzyx / single.html
Last active February 27, 2023 04:21
Hugo Partial for Generating the Table of Contents
...
{{- partial "toc.html" . -}}
...
@skyzyx
skyzyx / ffmpeg.sh
Last active August 26, 2018 02:43
Compile FFMPEG with everything (including MP4 → Animated WebP support)
brew install ffmpeg \
--with-chromaprint \
--with-fdk-aac \
--with-fontconfig \
--with-freetype \
--with-frei0r \
--with-game-music-emu \
--with-libass \
--with-libbluray \
--with-libbs2b \
@skyzyx
skyzyx / webp-build.sh
Created August 24, 2018 19:57
Build all of the binaries for the WebP CLI tools.
#! /usr/bin/env bash
rm -Rf /tmp/libwebp && \
git clone https://github.com/webmproject/libwebp.git /tmp/libwebp && \
mkdir -p /tmp/libwebp/build && \
cd /tmp/libwebp/build && \
cmake -DWEBP_ENABLE_SIMD=ON -DWEBP_BUILD_CWEBP=ON -DWEBP_BUILD_DWEBP=ON -DWEBP_BUILD_GIF2WEBP=ON -DWEBP_BUILD_IMG2WEBP=ON -DWEBP_BUILD_WEBPINFO=ON -DWEBP_NEAR_LOSSLESS=ON ../ && \
make && \
make install
@skyzyx
skyzyx / convert_giphy_gifs.sh
Created August 24, 2018 00:22 — forked from colinbendell/convert_giphy_gifs.sh
Simple mass conversion of GIF to MP4 (h264/h265), WebM (vp8/vp9) and WebP
#!/bin/sh
curl 'https://giphy.com/page/2?next=2017-12-01%2004%3A15%3A01&amp%3Bis=1&is=1&json=true' -o gipyurls.json
jq .[].gifs[].images.original.url gipyurls.json |cut -d / -f 5 | parallel -j 20 --gnu curl https://media2.giphy.com/media/{}/giphy.gif -o {}.gif
parallel -j 20 --gnu "ffmpeg -f gif -i {} {}.h264.mp4" ::: *.gif
parallel -j 20 --gnu "ffmpeg -f gif -i {} -c:v libx265 {}.h265.mp4" ::: *.gif
parallel -j 20 --gnu "ffmpeg -f gif -i {} -c:v libvpx {}.vp8.webm" ::: *.gif
parallel -j 20 --gnu "ffmpeg -f gif -i {} -c:v libvpx-vp9 {}.vp9.webm" ::: *.gif