Skip to content

Instantly share code, notes, and snippets.

View cuiwm's full-sized avatar
🎯
Focusing

cuiwm cuiwm

🎯
Focusing
  • UK
View GitHub Profile
@aburan28
aburan28 / sysctl.conf
Created May 29, 2017 11:02
optimized sysctl.conf
ARCH=$(uname -m)
which bc
if [ $? -ne 0 ]; then
echo "This script require GNU bc, cf. http://www.gnu.org/software/bc/"
echo "On Linux Debian/Ubuntu you can install it by doing : apt-get install bc"
fi
echo "Update sysctl for $host"
@Aikhjarto
Aikhjarto / DD_WRT_nvram_tricks.txt
Last active May 17, 2024 21:31
DD-WRT nvram tricks
This file provides some nifty command-line tools around DD-WRT's nvram command.
https://www.dd-wrt.com/wiki/index.php/Hardware#NVRAM
USE WITH CAUTION: fiddling with nvram can wipe your settings and you may loose access to your router.
Hint 1: Different version of DD-WRT might use different nvram variables. Thus, be carefull when updating.
Hint 2: The commands listed below should be issued via a ssh-connection since the webinterface for issuing commands might time out for the longer commands.
Background
==========
Extracting the content of configuration variables with nvram would provide an easy way of selective backup/restore of settings. However, listing the content of the nvram via
nvram show
@ingo-m
ingo-m / debian_install_cuda.md
Last active December 24, 2022 17:29
How to install CUDA on Debian

How to install CUDA on Debian 8 (Jessie)

This document describes how to install nvidia drivers & CUDA in one go on a fresh debian install.

Work in progress

Preparations

  • Start with a fresh Debian install.
@PFortin93
PFortin93 / sysctl.conf
Created January 11, 2017 14:08
Elastic sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
#
# Use '/sbin/sysctl -a' to list all possible parameters.
# Controls IPv4 Security
net.ipv4.ip_forward=0
net.ipv4.conf.all.send_redirects=0
@P1kachu
P1kachu / calling_printf_osx.c
Created November 24, 2016 20:30
Calling printf in OSX - The overkill way
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <mach-o/dyld.h>
#include <mach-o/nlist.h>
#include <mach-o/dyld_images.h>
#include <mach/mach_vm.h>
/* Dyld is the OSX Dynamic Linker
* /usr/include//mach-o/loader.h
% it creates a simple gray image (4x4)
I = [255, 255, 30, 100
255, 50, 90, 20
70, 70, 20, 10
100, 20, 10, 0];
% it converts it to grayscale
I = mat2gray(I);
% shows it
imshow(I);
@kandelvijaya
kandelvijaya / PrecisionTimer.swift
Created October 24, 2016 20:41
Precision Timing in iOS/OSX/Swift
//: Playground - noun: a place where code can play
import UIKit
//Most precise time keeper
// for more information on the benchmarks go to www.kandelvijaya.com
func timeBlockWithMach(_ block: () -> Void) -> TimeInterval {
var info = mach_timebase_info()
guard mach_timebase_info(&info) == KERN_SUCCESS else { return -1 }
@emotality
emotality / duplicate_line_xcode.md
Last active April 6, 2024 04:23
Xcode - Duplicate Line key binding

NOTE (2022-07-09): Xcode finally added this functionality in Xcode 14, please see release notes here:

New Features in Xcode 14 Beta 3
When editing code, the Edit > Duplicate menu item and its corresponding keyboard shortcut now duplicate the selected text — or the line that currently contains the insertion point, if no text is selected. (8614499) (FB5618491)


Xcode line duplicate

Bind keys to duplicate lines in Xcode

@steipete
steipete / ios-xcode-device-support.sh
Last active December 12, 2023 03:36
Using iOS 15 devices with Xcode 12.5 (instead of Xcode 13)
# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)
# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions
# (A similar approach works for older versions too, just change the version number after DeviceSupport)
@wangruohui
wangruohui / Install NVIDIA Driver and CUDA.md
Last active May 17, 2024 09:02
Install NVIDIA Driver and CUDA on Ubuntu / CentOS / Fedora Linux OS