Shengliang Song Shengliang

Keen to learn and motivated to contribute.

Shengliang / python install

Created March 23, 2022 17:47

	sudo apt install software-properties-common -y
	sudo add-apt-repository ppa:deadsnakes/ppa
	sudo apt install python3.10
	sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1
	sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.10 2
	# Now, you can easily switch to any version with the following commands.
	sudo update-alternatives --config python

Shengliang / innodb

Created March 11, 2017 00:26

https://blog.jcole.us/innodb/

Shengliang / flame_graph_examples

Created March 3, 2017 23:49

	Flame graphs are a visualization of profiled software, allowing the most frequent code-paths
	to be identified quickly and accurately.

	http://www.brendangregg.com/Slides/LISA13_Flame_Graphs.pdf

	http://www.brendangregg.com/flamegraphs.html

	git clone https://github.com/brendangregg/FlameGraph.git

	# example 1

Shengliang / Setup Ruby On Rails on macOS 10.12 Sierra

Created February 22, 2017 20:19

https://gorails.com/setup/osx/10.12-sierra

Shengliang / update-a-github-forked-repository

Created February 22, 2017 19:50


	git clone https://github.com/Shengliang/rails.git
	cd rails
	git remote -v
	git remote add upstream https://github.com/rails/rails.git
	git remote -v
	git fetch upstream

	export EDITOR=vim
	git rebase -i upstream/master

Shengliang / Install GCC and GDB from source

Created February 15, 2017 20:48

	yum commands:
	yum info package-name
	yum install package-name
	rpm -ql package-name
	yum search libudev

	g++

	From https://gist.github.com/craigminihan/b23c06afd9073ec32e0c
	153 g++ --version

Shengliang / How to enable core dumps?

Created February 3, 2017 05:37

	# Ref: https://www.unixmen.com/how-to-enable-core-dumps-in-rhel6/

	# sudo vi /etc/security/limits.conf

	#* soft core 0
	* soft core unlimited

	# sudo vi /etc/sysctl.conf

	kernel.core_pattern = /tmp/core-%e-%s-%u-%g-%p-%t

Shengliang / tlpi

Created January 31, 2017 20:21

	Source Code of the Programs in The Linux Programming Interface
	http://man7.org/tlpi/code/index.html

Shengliang / gdbinit

Created January 20, 2017 17:46 — forked from CocoaBeans/gdbinit

.gdbinit - A user-friendly gdb configuration file

	# INSTALL INSTRUCTIONS: save as ~/.gdbinit
	#
	# DESCRIPTION: A user-friendly gdb configuration file.
	#
	# REVISION : 7.3 (16/04/2010)
	#
	# CONTRIBUTORS: mammon_, elaine, pusillus, mong, zhang le, l0kit,
	# truthix the cyberpunk, fG!, gln
	#
	# FEEDBACK: https://www.reverse-engineering.net

Shengliang / get_next_higher_number_with_same_number_of_ones

Created October 19, 2016 03:46

	#include<stdio.h>
	#include<stdint.h>
	#include<stdlib.h>

	//Ref: http://www.slideshare.net/gkumar007/bits-next-higher-presentation
	/*
	x CAFE01F0
	-x 3501FE10
	smallest:x &-x 00000010
	ripple:x+ (x&-x) CAFE0200