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@gwillem
gwillem / ansible-bootstrap-ubuntu-16.04.yml
Created June 16, 2016 21:59
Get Ansible to work on bare Ubuntu 16.04 without python 2.7
# Add this snippet to the top of your playbook.
# It will install python2 if missing (but checks first so no expensive repeated apt updates)
# [email protected]
- hosts: all
gather_facts: False
tasks:
- name: install python 2
raw: test -e /usr/bin/python || (apt -y update && apt install -y python-minimal)
@a-dma
a-dma / yubitouch.sh
Last active March 10, 2022 14:43
Bash script for setting or clearing touch requirements for cryptographic operations in the OpenPGP application on a YubiKey 4.
#!/bin/bash
# Bash script for setting or clearing touch requirements for
# cryptographic operations the OpenPGP application on a YubiKey 4.
#
# Author: Alessio Di Mauro <[email protected]>
GCA=$(which gpg-connect-agent)
DO=0
UIF=0
@seebk
seebk / README.md
Last active July 23, 2024 22:43
Extract embedded certificates and keys from OpenVPN config files

This python script is intended to automate the extraction of embedded certificates and keys from OpenVPN config files.

Unfortunately the GNOME Network-Manager is not able to automatically import OpenVPN config files with embedded certificates and keys. A workaround is to manually extract these and store them in separate files (e.g. see https://naveensnayak.wordpress.com/2013/03/04/ubuntu-openvpn-with-ovpn-file/).

Instructions:

  • Make shure all the required packages are installed. For example on Ubuntu and Debian run:

    $ sudo apt-get install python3 network-manager-openvpn-gnome

@yurrriq
yurrriq / ipconfig.sh
Last active June 3, 2024 22:22
Get Public IP Address in Terminal
#!/bin/bash
# Slow
curl -s ifconfig.me | xargs echo -n
# Faster
curl -s icanhazip.com | xargs echo -n
# API: http://api.ident.me
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs