OpenSSL Cheat Sheet 🔐

Install

Install the OpenSSL on Debian based systems

sudo apt-get install openssl

devfans / config_os_udp_buffer.sh

Last active June 14, 2021 02:58

increase OS udp buffer size on ubuntu

	$ sysctl net.core.rmem_max
	net.core.rmem_max = 212992
	$ sysctl net.core.rmem_default
	net.core.rmem_default = 212992

	# set to take effect immediately
	$ sudo sysctl -w net.core.rmem_max=26214400
	net.core.rmem_max = 26214400
	$ sudo sysctl -w net.core.rmem_default=26214400
	net.core.rmem_default = 26214400

tayvano / gist:6e2d456a9897f55025e25035478a3a50

Created February 19, 2017 05:29

complete list of ffmpeg flags / commands

	Originall From: Posted 2015-05-29 http://ubwg.net/b/full-list-of-ffmpeg-flags-and-options

	This is the complete list that’s outputted by ffmpeg when running ffmpeg -h full.

	usage: ffmpeg [options] [[infile options] -i infile]… {[outfile options] outfile}…

	Getting help:
	-h — print basic options
	-h long — print more options
	-h full — print all options (including all format and codec specific options, very long)

raineorshine / memrise-export.js

Last active December 1, 2021 17:02

Export Memrise course words to CSV. There is also a Chrome Extension: https://chrome.google.com/webstore/detail/memrise-export/hcllgkpmoiolndnhmbdceffaidjmkoam

	/*

	UPDATE: This is now a Chrome Extension: https://chrome.google.com/webstore/detail/memrise-export/hcllgkpmoiolndnhmbdceffaidjmkoam
	Source Code: https://github.com/raineorshine/memrise-export

	Export Memrise course words to CSV (technically TSV, or "tab separated file", but it is effectively the same).

	1. Log into Memrise.
	2. Navigate to the course page you would like to export (e.g. https://app.memrise.com/course/2156672/german-random-01/).
	3. Open the browser's Developer Console (https://support.airtable.com/hc/en-us/articles/232313848-How-to-open-the-developer-console)

codesynapse / CasperJS-install-fix.js

Created January 11, 2016 10:23

Fix to add in CasperJS 1.0.4 file - bootstrap.js in Line 31 onwards

	/Install issue fix /
	var system = require('system');
	var argsdeprecated = system.args;
	argsdeprecated.shift();
	phantom.args = argsdeprecated;

karenyyng / Git_mergetool_tutorial_with_Vim.md

Last active November 19, 2025 06:40

How to use `git mergetool` to resolve conflicts in Vim / NeoVim

Skip to the relevant sections if needed.

irazasyed / manage-etc-hosts.sh

Created March 7, 2015 09:16

Bash Script to Manage /etc/hosts file for adding/removing hostnames.

limdauto / casperjs.cheatsheet.js

Last active May 23, 2021 15:24 — forked from LeCoupa/casperjs.cheatsheet.js

	// PhantomJS Cheatsheet

	$ brew update && brew install phantomjs // install PhantomJS with brew

	phantom.exit();

	var page = require('webpage').create();

	page.open('http://example.com', function() {});
	page.evaluate(function() { return document.title; });