Skip to content

Instantly share code, notes, and snippets.

View 9nut's full-sized avatar

Skip Tavakkolian 9nut

33 followers · 39 following
View GitHub Profile
@9nut
9nut / concio_ex.c
Created June 20, 2022 21:44
Example concurrent network requests using the Plan 9 threads library
#include <u.h>
#include <libc.h>
#include <thread.h>
int STKSIZE = 2*1024;
struct SleepArgs {
long millies;
Channel *c;
};
@9nut
9nut / dhcpd_diffs.out
Last active June 5, 2020 16:20
Plan 9 dhcpd.c modifications for PXE booting Raspberry Pi 3 and Pi 4
diff ./dhcpd.c /n/sources/plan9/sys/src/cmd/ip/dhcpd/dhcpd.c
1143d1142
< char ipaddrstr[NDB_IPlen];
1263,1267d1261
< case ODtftpserver: /* RPi4s request it for no-SD netbooting without hardcoding TFTP_IP in EEPROM */
< memset(ipaddrstr, 0, sizeof(ipaddrstr));
< sprint(ipaddrstr, "%I", rp->up->laddr);
< stringopt(rp, ODtftpserver, ipaddrstr);
< break;
1289,1308d1282
@9nut
9nut / FM_tone.ino
Created July 7, 2019 23:35
Arduino sketch for controlling NS73M FM transmitter with an ATtiny85
/*
12-1-2007
Cai Maver, caimaver(at)yahoo.com
ARRRduino+NS73M v0.3
This code allows an Arduino Diecimila to control an NS73M FM Transmitter Module (Arrr matey!)
This sets the NS73M (available from Sparkfun, SKU#: WRL-08482) to transmit
at 2mW with 75us pre-emphasis (the standard for North America) on 97.3 MHz.
@9nut
9nut / OpenSSL Cheatsheet.md
Last active May 3, 2019 21:30 — forked from davewongillies/OpenSSL Cheatsheet.md
OpenSSL Cheatsheet

General OpenSSL Commands

These commands allow you to generate CSRs, Certificates, Private Keys and do other miscellaneous tasks.

  • Generate a new private key and Certificate Signing Request
openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key
  • Generate a self-signed certificate (see How to Create and Install an Apache Self Signed Certificate for more info)
@9nut
9nut / filter.rc
Created January 26, 2019 03:02
Prime Sieve - Plan 9 rc script
# prime sieve based on https://swtch.com/~rsc/talks/threads07/
# primes appear on stderr
# example:
# seq 2 100 | filter
fn filter {
p=`{read -n 1}
if (~ $status '') {
echo $p >[1=2]
x=`{read -n 1}
@9nut
9nut / megachess_odroidgo.ino
Created November 2, 2018 05:42
Megachess M5stack adapted to ODROID GO
//ArduinoMega Chess 1.0 M5Stack
//engine 1.4
//Sergey Urusov, ususovsv@gmail.com
//
// Adapted to ODROID GO
#include <odroid_go.h>
#include <Preferences.h>
Preferences prefs;
@9nut
9nut / example simple assembler - counter
Created December 11, 2017 17:29
; Example for the following 8-bit machine simulator
; http://schweigi.github.io/assembler-simulator/index.html
; Enumerate numbers from zero to [C]
start:
MOV C, 10 ; C = 10
MOV D, 232 ; D = 232 ; D is set to output memory location
CALL counter ; enumerate from 0 to C, output to *D
HLT ; Stop execution
@9nut
9nut / example simple assembler - sumup
Created December 11, 2017 08:47
; Examples for this simulator
; http://schweigi.github.io/assembler-simulator/index.html
; sum up numbers in the range from-to
JMP start
from: DB 1
to: DB 22
sum: DB 0
start:
@9nut
9nut / keybase.md
Created August 20, 2017 17:37

Keybase proof

I hereby claim:

  • I am 9nut on github.
  • I am skipt (https://keybase.io/skipt) on keybase.
  • I have a public key whose fingerprint is D27E 65C0 CF1F D786 AC33 9E20 BF2F 025D 4A25 8A14

To claim this, I am signing this object:

@9nut
9nut / designer.html
Last active May 5, 2016 17:46
designer
<link rel="import" href="../core-icon-button/core-icon-button.html">
<link rel="import" href="../core-toolbar/core-toolbar.html">
<link rel="import" href="../core-header-panel/core-header-panel.html">
<link rel="import" href="../core-pages/core-pages.html">
<link rel="import" href="../core-item/core-item.html">
<polymer-element name="my-element">
<template>
<style>