리눅스 커널은 오픈 소스 소프트웨어이므로 그 소스코드가 공개되어 있어 누구나 인터넷을 통해 쉽게 얻을 수 있습니다. 이 글에서는 리눅스 커널 소스코드를 받아올 수 있는 몇가지 방법을 설명합니다. kernel.org 리눅스 커널 소스 코드를 받아오기 위한 기본적 공식 사이트는 [kernel.org] (https://www.kernel.org) 라 할 수 있겠는데, 이 사이트에는 소스 코드를 포함해 리눅스 커널을 위한 다양한 리소스가 정리되어 있습니다. 이 사이트에 웹브라우저를 통해 들어가보면 첫페이지에서부터 가장 최근에 릴리즈된 버전의 소스코드, 가장 최근의 안정화된 버전의 소스코드 등을 tar....
I am using Fedora 23 laptop and installed stable version Google Chrome from its official website [0]. In this case, just using Updates of Fedora Software program doesn’t update Chrome automatically. For the case, follow below commands to update your Chrome: $ sudo dnf update google-chrome-stable ... $ sudo killall chrome $ google-chrome-stable The second killall command is necessary because Chrome doesn’t kill its process by just cliking Close button. Or, you may reboot your computer but you wouldn’t like that....
I have developed a chat bot [1] for Kakaotalk [2] using Go language because I have been curious about the process of Kakaotalk chat bot development process. Implementation to major version has consumed only two hours owing to power of Go language, simpleness of Kakaotalk auto-reply API, and simple simple functionality requirement of my bot. It has coded really simply and in brute-force manner, do only simple echoing. However, for the reason, the code could be helpful for beginner of Kakaotalk chat bot or Go language Restful API server programmer....
You can use arping to know IP address to MAC address mapping of your local network. Usage is simple: arping [-AbDfhqUV] [-c count] [-w deadline] [-s source] -I interface destination For example, you may use the command as below: $ arping -I eth0 10.0.0.1 ARPING 10.0.0.1 from 10.0.0.2 eth0 Unicast reply from 10.0.0.1 [11:22:33:44:55:66] 0.123ms Unicast reply from 10.0.0.1 [11:22:33:44:55:66] 0.251ms ... Secret of the tool is ARP protocol [1]. To know the MAC address of the machine that has a specific IP address, IP protocol layer uses the protocol....
The importance of physically contiguous memory has increased in modern computing environments, including both low- and high-end systems. Existing physically contiguous memory allocators generally have critical limitations. For example, the most commonly adopted solution, the memory reservation technique, wastes a significant amount of memory space. Scatter/Gather direct memory access (DMA) and input-output memory management units (IOMMUs) avoid this problem by utilizing additional hardware for address space virtualization. However, additional hardware means an increase in costs and power consumption, which is especially disadvantageous for small systems and they do not provide real contiguous memory....