Fábio Silva ffosilva

1.) Download a Nerd Font

2.) Unzip and copy to ~/.local/share/fonts

3.) Run the command fc-cache -fv to manually rebuild the font cache

Convert sequence of JPEG images to MP4 video

ffmpeg -r 24 -pattern_type glob -i '*.JPG' -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse.mp4

-r 24 - output frame rate
-pattern_type glob -i '*.JPG' - all JPG files in the current directory
-i DSC_%04d.JPG - e.g. DSC_0397.JPG
-s hd1080 - 1920x1080 resolution

Slower, better quality

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

Eclipse Shortcut for Ubuntu Unity

a shortcut to run Eclipse on Ubuntu Unity and to register Eclipse with the left Launcher

Installation

Benchmark commands

Producer

Setup

bin/kafka-topics.sh \
  --zookeeper zookeeper.example.com:2181 \
  --create \

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

	# by joevt Jul 7, 2020

	#=========================================================================================
	#
	#
	# Thunderbolt DROM Notes:
	#
	#
	# https://lore.kernel.org/patchwork/patch/714766/
	#

	MacBook9,1: 'Mac-9AE82516C7C6B903'
	iMac14,1: 'Mac-031B6874CF7F642A'
	iMac10,1: 'Mac-F2268DC8'
	MacBookPro8,1: 'Mac-50619A408DB004DA'
	MacBook6,1: 'Mac-F22C8AC8'
	MacBookPro10,2: 'Mac-AFD8A9D944EA4843'
	iMac12,2: 'Mac-942B59F58194171B'
	iMac14,2: 'Mac-27ADBB7B4CEE8E61'
	MacBook8,2: 'Mac-F305150B0C7DEEEF'
	MacBookAir6,1: 'Mac-35C1E88140C3E6CF'