eiri

def print_nerd_font():
    print('# Nerd - Pomicons:')
    for c in range(0xe000, 0xe00b):
        print(f'{hex(c)} - {chr(c)}')

    print('# Nerd - Powerline + extra:')
    for c in range(0xe0a0, 0xe0a4):
        print(f'{hex(c)} - {chr(c)}')
    for c in range(0xe0b0, 0xe0c9):
        print(f'{hex(c)} - {chr(c)}')

eiri

Aegis key cache flow chart

View: http://bl.ocks.org/eiri/5c166c1fef95e41835fd02df81f83c90

eiri

#!/usr/bin/env escript
%% -*- erlang -*-
%%! -s -pa src/erlfdb/ebin


-define(CLUSTER_FILE, <<"/usr/local/etc/foundationdb/fdb.cluster">>).
-define(DIR, <<"test">>).
-define(KEY, <<"counter">>).

-define(TIMEOUT, 1000).

eiri

Grab a data file. "American movies scraped from Wikipedia" is a nice condence set at size 3.4M wget https://raw.githubusercontent.com/prust/wikipedia-movie-data/master/movies.json -O movies.json

Slice movies made from 1920 till 1930 and output them line by line

jq -cr '.[] | select(.year >= 1920 and .year <= 1930)' movies.json

Pass the output to reducer to group by year, calculate total movies per year and accumulate movies into "movies" array in each block

eiri

Cheat

Command line utility cheat https://github.com/cheat/cheat is kind of a man alternative.

Installation & configuration

brew install cheat mkdir -p ~/.config/cheat && cheat --init > ~/.config/cheat/conf.yml

edit to following (a list of avail styles at https://github.com/alecthomas/chroma/tree/master/styles)

eiri

sub.DEFAULT_GOAL := check
.EXPORT_ALL_VARIABLES:

CURL_HOME = $(CURDIR)
JAR = $(CURDIR)/jar

DB = http://localhost:15984
ADM_CRD = '{"username":"admin", "password": "admin"}'
USR_CRD = '{"name":"eiri", "password": "eiri"}'

eiri

Bash string manipulation cheatsheet

Assignment
Assign value to variable if variable is not already set. Value will be returned. Couple with : no-op if return value is to be discarded.	${variable="value"} : ${variable="value"}

eiri

FROM node:8.11-alpine

RUN npm install --global gitbook-cli && \
    gitbook fetch 3.2.2 && \
    gitbook install && \
    npm cache clear --force && \
    rm -rf /tmp/*

# Fixes https://github.com/GitbookIO/gitbook/issues/1309
RUN sed -i.bak 's/confirm: true/confirm: false/g' \

eiri

Error: The operation couldn’t be completed. (com.apple.commerce.client error 500.)

Fix: defaults write com.apple.appstore.commerce Storefront -string "$(defaults read com.apple.appstore.commerce Storefront | sed s/,8/,13/)"

Ref: https://discussions.apple.com/thread/250154403?answerId=250306539022#250306539022

eiri

KERL_DEFAULT_INSTALL_DIR=/opt/erlang
KERL_CONFIGURE_OPTIONS="--enable-debug --without-javac --enable-shared-zlib --enable-dynamic-ssl-lib --disable-hipe --enable-smp-support --enable-threads --enable-kernel-poll --with-wx --with-ssl=/usr/local/opt/openssl"