vegard

Getting started with Linux kernel development

Prerequisites

The Linux kernel is written in C, so you should have at least a basic understanding of C before diving into kernel work. You don't need expert level C knowledge, since you can always pick some things up underway, but it certainly helps to know the language and to have written some userspace C programs already.

It will also help to be a Linux user. If you have never used Linux before, it's probably a good idea to download a distro and get comfortable with it before you start doing kernel work.

Lastly, knowing git is not actually required, but can really help you (since you can dig through changelogs and search for information you'll need). At a minimum you should probably be able to clone the git repository to a local directory.

vikpe

Error

The authenticity of host 'github.com (140.82.113.4)' can't be established.

Fix

ssh-keyscan github.com >> ~/.ssh/known_hosts

blurayne

#!/bin/bash

##
# Pure BASH interactive CLI/TUI menu (single and multi-select/checkboxes)
#
# Author: Markus Geiger <[email protected]>
# Last revised 2019-09-11
#
# ATTENTION! TO BE REFACTORED! FIRST DRAFT!
#

marcan

Testing done using a Canon EOS 600D and a Canon EF-S18-55mm f/3.5-5.6 IS II.

Pinout

1. VBAT
2. DET (common with P-GND on lens side)
3. P-GND
4. VDD
5. DCL
6. DLC

sabas1080

/*
  Copyright (c) 2014-2020 Electronic Cats SAPI de CV.  All right reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

richinseattle

#!/bin/bash

# ext4 disable journal

# Create ext4 fs 
mkfs.ext4 /dev/sda2

# Enable writeback mode. This mode will typically provide the best ext4 performance.
tune2fs -o journal_data_writeback /dev/sda2

kuba--

git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard
git submodule foreach --recursive git reset --hard
git submodule update --init --recursive

jcberthon

NetworkManager WiFi Power Saving

NetworkManager supports WiFi powersaving but the function is rather undocumented.

From the source code: wifi.powersave can have the following value:

• NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0): use the default value
• NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1): don't touch existing setting
• NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2): disable powersave

taoyuan

# npm using https for git
git config --global url."https://github.com/".insteadOf [email protected]:
git config --global url."https://".insteadOf git://

# npm using git for https
git config --global url."[email protected]:".insteadOf https://github.com/
git config --global url."git://".insteadOf https://

pkazmierczak

import asyncio


@asyncio.coroutine
def factorial(name, number):
    f = 1
    for i in range(2, number + 1):
        print("Task %s: Compute factorial(%d)..." % (name, i))
        yield from asyncio.sleep(1)
        f *= i