hed0rah

=============================================================================
          MS-DOS VGA VIDEO HARDWARE & DIRECT MEMORY MANIPULATION
=============================================================================

[1] BIOS INTERFACE FONT MISMATCHES (INT 10h)
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Forces the VGA BIOS to map non-native physical ROM font heights into the active 
16-pixel high text grid. Forcing mismatched metrics causes row duplication, 
truncation, and structural distortions.

hed0rah

GCC / Linux Security Flags Reference (2026)

My old fossilized reference can still be found at https://gist.github.com/hed0rah/f5c976fdc602688a0fd40288fde6d886

Modern GCC hardening reference for production builds and security testing.

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Production hardening (GCC 14+)

hed0rah

/* font here - https://github.com/ahatem/IoskeleyMono */

:root {
  --ug-accent: #e8602b;              /* CS-100 amber-orange. FLX vermilion = #e5421f */
  --ug-ink:    #0d0d0e;              /* near-black ground */
  --ug-line:   rgba(255,255,255,0.08);
}

/* ---- tab bar: flat document header, hairline base ---- */
app-root > .content .tab-bar,

hed0rah

#!/usr/bin/env bash
#
# hovercraft.sh - Build an ultra-stripped BusyBox from scratch,
#                 populate a minimal rootfs, and pivot into an isolated namespace.
#
set -euo pipefail

ROOT="${1:-/tmp/handroll-rootfs}"
HOSTNAME_IN="earth"
CR=$'\r'

hed0rah

#!/usr/bin/env bash
set -euo pipefail

CR=$'\r'

openssl s_client -connect busybox.net:443 -quiet 2>/dev/null <<EOF | sed '1,/^\r$/d' > busybox-1.38.0.tar.bz2
GET /downloads/busybox-1.38.0.tar.bz2 HTTP/1.1${CR}
Host: busybox.net${CR}
Connection: close${CR}
${CR}

hed0rah

# Public Bash helper pack: fzf/bat previews, git pickers, process picker,
# numeric conversions, bitwise helpers, and CIDR scratchpad.
#
# Install:
#   cp .bashrc_share ~/.bashrc_share
#   printf '\n[ -f "$HOME/.bashrc_share" ] && . "$HOME/.bashrc_share"\n' >> ~/.bashrc
#
# Requires Bash 3.2+.
# Optional tools:
#   fzf, bat or batcat, rg, fd, git, pbcopy/wl-copy/xclip/xsel

hed0rah

Git Log Exploration Cheatsheet

Ultimate All-in-One (Graph, Full Message/MR Description, and Code Diff)

git log --graph --patch --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset%n%n%w(80,2,2)%B%n'

Search Commit Messages for Specific Keywords

git log --grep="search term"

Find Commits that Added or Removed Specific Code Strings

git log -S"code_snippet"

hed0rah

tar \
  --exclude='.git' \
  --exclude='node_modules' \
  --exclude='__pycache__' \
  --exclude='.venv' \
  --exclude='venv' \
  --exclude='.next' \
  --exclude='dist' \
  --exclude='build' \
  --exclude='target' \

hed0rah

x8r

A native CLI + shared library that answers two questions fast: "how many tokens is this file?" and "where do I cut it at ≤N tokens without slicing a function in half?"

What it is

• single-purpose token-aware chunker for LLM agent tools
• drop-in replacement for calling tiktoken in a subprocess loop
• emits byte offsets [start, end) + token counts + boundary kind

Why

hed0rah

# Windows 11 Pro 25H2 -- AI and Telemetry Lockdown Cheatsheet

Tested on build 26200.x. Assumes Windows 11 Pro (gpedit.msc access required for Group Policy sections).

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## 1. Settings App

### Privacy & Security > General