Longyue Li longyue0521

Understanding the Memory Layout of Linux Executables

Required tools for playing around with memory:

hexdump
objdump
readelf
xxd
gcore

重启ubuntu，随即长按shift进入grub菜单
选择advanced operation...中的recovery mode回车确认
在Recovery Menu中选择"Root Drop to root shell prompt"回车确认
在root下输入：mount -o remount,rw /
passwd username

https://askubuntu.com/questions/57620/getting-an-authentication-token-manipulation-error-when-trying-to-change-my-us https://blog.csdn.net/prince_jun/article/details/22507421

Testing with GoMock: A Tutorial

08/16/17 by Sergey Grebenshchikov

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This is a quick tutorial on how to test code using the GoMock mocking library and the standard library testing package testing.

GoMock is a mock framework for Go. It enjoys a somewhat official status as part of the github.com/golang organization, integrates well with the built-in testing package, and provides a flexible expectation API.

	#include <stddef.h>
	/**
	* return length of valid string which has '\0' or 0 as terminated
	*/
	size_t
	str_len( const char *str)
	{
	size_t i;
	for( i = 0; str[i] != '\0'; i++);
	return i;

	#include <stdio.h>

	void clear_stdin_buffer() {
	char ch;
	while( (ch = getchar()) != '\n' && ch != EOF );
	}

	Byobu Commands
	==============

	byobu Screen manager


	Level 0 Commands (Quick Start)
	------------------------------

	<F2> Create a new window

	int read_int() {
	char c = getchar_unlocked();
	while(c<'0' \|\| c>'9') c = getchar_unlocked();
	int ret = 0;
	while(c>='0' && c<='9') {
	ret = 10 * ret + c - 48;
	c = getchar_unlocked();
	}
	return ret;
	}

	/* https://bugdivine.blogspot.com/p/fast-input-reader-in-cc.html */
	#include <stdio.h>

	int fastRead_int() {
	register int c = getchar_unlocked();
	int x;
	x = 0;
	int neg = 0;
	for(; ((c<48 \|\| c>57) && c != '-'); c = getchar_unlocked());
	if(c=='-') {

	#!/bin/sh
	# Partly copy from https://tip.golang.org/misc/git/pre-commit
	# Copyright 2012 The Go Authors. All rights reserved.
	# Use of this source code is governed by a BSD-style
	# license that can be found in the LICENSE file.

	# git gofmt pre-commit hook
	#
	# To use, store as .git/hooks/pre-commit inside your repository and make sure
	# it has execute permissions.