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@fcalderan
fcalderan / inception-javascript.js
Created November 2, 2010 09:42
inception explained as a 4 nested javascript closures
/*
* Fabrizio Calderan, twitter @fcalderan, 2010.11.02
* I had an idea: could Inception movie be explained by a few javascript closures
* and variable resolution scope (just for fun)?
*
* Activate javascript console =)
*/
<script>
console.group("inception movie");
@jboner
jboner / latency.txt
Last active July 22, 2024 00:16
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@thirteen37
thirteen37 / pixel-arch.md
Last active June 6, 2020 07:47
Installing Arch on the Chromebook Pixel

This describes my basic Arch Linux installation on my Chromebook Pixel.

Note: I'm a coward, so I installed Arch to an SD card instead of wiping out the existing SSD.

Requirements

  • SD card. A very minimal Arch installation with XFCE will need about 2GB, so I think 4GB is the minimum you can get by with.
  • Arch installer on a USB drive. The 2013.05.01 is broken with the recent netctl change. So either get an older or newer one.
  • Some Arch Linux familiarity.
  • Time, patience, and good eyesight.
@mattes
mattes / cloud-config.yaml
Last active November 2, 2016 16:37
CoreOS on Google Compute Engine: push systemd journal logs to logentries.com https://medium.com/coreos-linux-for-massive-server-deployments/defb984185c5
#cloud-config
write_files:
- path: /home/core/journal2logentries.sh
permissions: '0744'
owner: root:root
content: |
#!/usr/bin/env bash
# CoreOS on Google Compute Engine: push systemd journal logs to logentries.com
# get your private token from logentries.com, see https://logentries.com/doc/input-token
@listochkin
listochkin / node-command-line-options.txt
Created April 17, 2014 11:00
Node V8 GC-related options
--log_gc (Log heap samples on garbage collection for the hp2ps tool.)
type: bool default: false
--expose_gc (expose gc extension)
type: bool default: false
--max_new_space_size (max size of the new generation (in kBytes))
type: int default: 0
--max_old_space_size (max size of the old generation (in Mbytes))
type: int default: 0
--max_executable_size (max size of executable memory (in Mbytes))
type: int default: 0
@danesparza
danesparza / negroni-gorilla.go
Last active December 16, 2020 12:36
Negroni with Gorilla mux subrouter
package main
import (
"fmt"
"github.com/codegangsta/negroni"
"github.com/gorilla/mux"
"log"
"net/http"
)
@l0ki000
l0ki000 / csd-wrapper.sh
Last active January 19, 2024 11:56 — forked from zer4tul/gist:6477470
Cisco Anyconnect CSD wrapper for OpenConnect (exhanced to autodownload and autoupdate hostscan)
#!/bin/bash
# Cisco Anyconnect CSD wrapper for OpenConnect
# Enter your vpn host here
CSD_HOSTNAME=
if [[ -z ${CSD_HOSTNAME} ]]
then
echo "Define CSD_HOSTNAME with vpn-host in script text. Exiting."
exit 1
fi
#!/bin/sh
BOOT2DOCKER_CERTS_DIR=/var/lib/boot2docker/certs
CERTS_DIR=/etc/ssl/certs
CAFILE=${CERTS_DIR}/ca-certificates.crt
for cert in $(/bin/ls -1 ${BOOT2DOCKER_CERTS_DIR}); do
SRC_CERT_FILE=${BOOT2DOCKER_CERTS_DIR}/${cert}
CERT_FILE=${CERTS_DIR}/${cert}
HASH_FILE=${CERTS_DIR}/$(/usr/local/bin/openssl x509 -noout -hash -in ${SRC_CERT_FILE} 2>/dev/null)
@essandess
essandess / SMIME Encrypted Email Example with Gmail and Comodo.md
Last active January 10, 2023 16:35
S/MIME Encrypted Email Example with Gmail and Comodo and macOS

S/MIME Encrypted Email Example with Gmail and Comodo

A quick how-to installation for secure S/MIME installation for a Gmail account on macOS. This certificate can be used to simultaneously encrypt and sign emails.

Obtain and install an S/MIME Certificate

  1. Create a unique revocation passphrase in a password manager—long, random, unique.
  2. Browse to Comodo and request a free, secure email certificate:
  • Enter your name, email address, and specify the maximum 2048 bit length
  • Enter your revocation passphrase in case your private key is ever stolen or compromised
@xavdid
xavdid / travis-env-keys.py
Last active September 19, 2021 03:40
Python script to find ENV_VAR keys on your travis projects
import argparse
import os
from math import ceil
from typing import List
try:
import requests
from requests import HTTPError
except ImportError:
print("This script uses the `requests` package")