This is a cheat sheet for how to perform various actions to ZSH, which can be tricky to find on the web as the syntax is not intuitive and it is generally not very well-documented.
| Description | Syntax |
|---|---|
| Get the length of a string | ${#VARNAME} |
| Get a single character | ${VARNAME[index]} |
| name: example CICD | |
| on: | |
| push: | |
| branches: | |
| - master | |
| paths: | |
| # only commits containing changes under these paths will trigger this workflow | |
| - 'services/example/**' | |
| - 'lib/example/**' |
| license: apache-2.0 | |
This is how you'd call the function:
Call(Function("GetNestedDocument"), [Ref(Collection("SomeCollection"), "264260207986606612"), 0, 3])
Parameters:
Ref of a document.Lambda we need to pass 0 for the first level.
| # frozen_string_literal: true | |
| require 'aws-sdk-dynamodb' | |
| require 'hirb' | |
| # NOTICE: Authorize via https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html | |
| dynamodb = Aws::DynamoDB::Client.new | |
| scan_opts = { table_name: '<TABLE_NAME>' } | |
| items = [] |
| Mute these words in your settings here: https://twitter.com/settings/muted_keywords | |
| ActivityTweet | |
| generic_activity_highlights | |
| generic_activity_momentsbreaking | |
| RankedOrganicTweet | |
| suggest_activity | |
| suggest_activity_feed | |
| suggest_activity_highlights | |
| suggest_activity_tweet |
| # Upper | |
| cpulimit -l 1 -- taskset -c 0 ./pct | |
| cpulimit -l 18 -- taskset -c 1 ./pct | |
| cpulimit -l 35 -- taskset -c 2 ./pct | |
| cpulimit -l 52 -- taskset -c 3 ./pct | |
| cpulimit -l 69 -- taskset -c 4 ./pct | |
| cpulimit -l 86 -- taskset -c 5 ./pct | |
| cpulimit -l 103 -- taskset -c 6 ./pct | |
| cpulimit -l 1 -- taskset -c 63 ./pct |
| # batch convert | |
| for i in *.mp4; do ffmpeg -i "$i" "${i%.mp4}.webm"; done | |
| # convert from one format to another | |
| ffmpeg -i input.mp3 output.wav | |
| # convert from one video format to another ("-qscale" value are 0-10, 0 is the best) | |
| ffmpeg -i input.mp4 -qscale 0 output.webm | |
| # convert video to audio (sometimes this one is better than the custom one below) |
| FROM ruby:2.5.5-alpine3.9 as builder | |
| WORKDIR /app | |
| ARG RAILS_MASTER_KEY | |
| ENV BUNDLE_SILENCE_ROOT_WARNING=1 \ | |
| BUNDLE_IGNORE_MESSAGES=1 \ | |
| BUNDLE_GITHUB_HTTPS=1 \ | |
| BUNDLE_FROZEN=1 \ |
