glnds

Less Cheatsheet

less {filename}

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harryi3t

#/bin/bash

TOKEN='put your token here. Get a new from https://api.slack.com/docs/oauth-test-tokens'

dbus-monitor --session type='signal',interface='com.canonical.Unity.Session' | while true
do
  read x
  if echo "$x" | grep -q Locked; then
    echo "set yourself away at $(date)"
    curl -X GET -H "Cache-Control: no-cache" "https://slack.com/api/users.setPresence?token=$TOKEN&presence=away"

koenrh

Running Hashcat on Google Cloud's GPU-based VMs

In February 2017, Google announced the availability GPU-based VMs. I spun up a few of these instances, and ran some benchmarks. Along the way, I wrote down the steps taken to provision these VM instances, and install relevant drivers.

Update April 2019: Updated instructions to use instances with the Tesla T4 GPUs.

mill1000

About

This gist will show how to setup Raspbian Stretch as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.

Motivation

A quick search will turn up a plethora of tutorials on setting up A2DP on the Raspberry Pi. However, I felt this gist was necessary because this solution is:

• Automatic & Headless - Once setup, the system is entirely automatic. No user iteration is required to pair, connect or start playback. Therefore the Raspberry Pi can be run headless.
• Simple - This solution has few dependencies, readily available packages and minimal configuration.
• Up to date - As of December 2017. Written for Raspbian Stretch & Bluez 5.43

Prerequisites

y-polek

#! /bin/zsh

# Buttery powered state
adb shell dumpsys battery | grep powered

# Unplug battery
adb shell dumpsys battery unplug

# Reset battery
adb shell dumpsys battery reset

mill1000

#!/bin/bash
# Continuously queries RPi3 GPU for temperature, clock rates and throttled status
# Original from https://www.raspberrypi.org/forums/viewtopic.php?t=244320
echo -e "Time      Temp     CPU     Core    Health      Vcore"
while true ; do
  Temp=$(vcgencmd measure_temp | cut -f2 -d=)
  Clockspeed=$(vcgencmd measure_clock arm | awk -F"=" '{printf ("%0.0f",$2/1000000); }' )
  Corespeed=$(vcgencmd measure_clock core | awk -F"=" '{printf ("%0.0f",$2/1000000); }' )
  Health=$(vcgencmd get_throttled | awk -F"=" '{printf("0x%08x\n",$2)}')
  CoreVolt=$(vcgencmd measure_volts | cut -f2 -d=)