m-bartlett

Hard-toggle NVIDIA kernel module and PCI visibility to enforce dGPU is powered off for power-saving.

Prevent auto-loading of NVIDIA kernel modules at boot

Note

I use this setup on Arch and the instructions are catered for Arch, but this should apply generally to any distro. This also assumes you're using the NVIDIA open kernel modules, on Arch this is the nvidia-open-dkms pacman package.

1. Add the modprobe config in this gist to /etc/modprobe.d/, you can name it whatever but it's purpose is to prevent NVIDIA modules from being loaded at boot automatically.

m-bartlett

#!/usr/bin/env bash
set -o errexit -o nounset

error() {
    echo "$1" >&2
    exit 1
}

read-json() {
    local -A "j=($(sed -E 's/[{}]//g; s/"([^"]+)":"([^"]+)"/\[\1\]="\2"/g; s/,/ /g; s/\$/$$/g'))"

m-bartlett

# This is an example of what you could add to your ~/.config/mpv/input.conf file to make use of this script.
# ctrl+r will cycle through rotations for the playback of the video. Rotate the video to the desired orientation.
# shift+r will invoke the 'ffmpeg-rotate' function from lua script to update the playback rotation of the file permanently.

ctrl+r cycle_values video-rotate 90 180 270 0
R script-message ffmpeg-rotate

m-bartlett

SnapSHAt

This tool uses the existing Python standard library as of 3.11, no external dependencies are needed.

Note

When I was initially began writing this tool I was using SHA256 to compute file hashes but later found empirically that BLAKE2 was considerably faster, and since filesystems can easily exceed millions of files to hash it was a significant speedup to change the hashing algorithm. However, I still feel this pun encapsulates the essence of the tool and couldn't think of a better name.

Features

• Stores unique file contents in a "blob cache" where the content files are renamed after the hash of their contents (this is similar to how git stores files).
• Hardlinks files to these hashed blobs. The usefulness of this comes with subsequent snapshots, where presumably the majority of your filesystem is unchanged. Unchanged files will produce the same hash, and therefore can be hardlinked once again to the same blob which reuses the storage in the blob instead of creating a redundant copy o

m-bartlett

m-bartlett

#!/usr/bin/env python
import i3ipc
import subprocess
import json

def node_contains_point(node, x, y):
    """Determine if the given point (x,y) is contained by the given node's boundary"""
    r = node.rect
    return all((x > r.x,
                x < (r.x + r.width),

m-bartlett

#!/usr/bin/env python3
import i3ipc
from time import sleep

DROPDOWN_IDENTIFIER       = "dropdown"
DROPDOWN_CHILD_IDENTIFIER = "dropdownchild"
INITIAL_TERMINAL_QUANTITY = 3
TERMINAL_COMMAND          = f"terminal -n {DROPDOWN_CHILD_IDENTIFIER}"
HEIGHT_PERCENTAGE         = 39
FRAME_STEP                = 20

m-bartlett

Generate animated frames of a hyperbolic tree of life. See the --help output for info on using ffmpeg to also generate a video file from the resulting rendered frames.

m-bartlett

#!/usr/bin/env bash

# Usage:
# Multiple args: $ youtube-playlist https://youtu.be/############ https://youtu.be/############ ... 
# Single delimited arg: $ youtube-playlist 'https://youtu.be/############ https://youtu.be/############ ...'


youtube-playlist() {
  local urls=( $(IFS=$'\n'; <<<"$*" grep -o 'v=.*' | cut -f 2 -d=) )
  local comma_separated="$(IFS=,; echo "${urls[*]}")"

m-bartlett

import sys
import termios
import atexit

def password_input(prompt="Enter password: "):
  fd = sys.stdin.fileno()
  iflag, oflag, cflag, lflag, ispeed, ospeed, cc = termios.tcgetattr(fd)
  def _restore_tty():
    termios.tcsetattr(fd, termios.TCSANOW, [iflag,oflag,cflag,lflag|termios.ECHO|termios.ICANON,ispeed,ospeed,cc])
  atexit.register(_restore_tty)      # restore tty on unexpected exit