[Internet](EN) Difference between CNAME and A record

Brief explanation about difference between CNAME and A record

Prior Knowledge

  • DNS(Domain Name Server)
  • Domain, IP Address
  • Let’s assume there is domain which name is test.me


CNAME = Acronym of Canonical Name. It gives another name to specific domain name. You can easily think that it is another name of domain name


 blog.test.me -> test.me // Another domain name of test.me
 www.test.me -> test.me  // Another domain name of test.me

A record

A record means domain name has One IP Address. Specific domain(include sub or root) has its own ip address. Like below sub domain can have different ip address.


dev.test.me -> 123.456.789.123 // dev.test.me ip address
test.me -> 987.654.321.123     // test.me ip address

Wiki Example

Below are examples from Wikipedia. Each has different value depends on TYPE

bar.example.com CNAME foo.example.com
foo.example.com A

[Linux] 쉘 스크립트에서 멀티프로세스(혹은 스레드) 기능 사용하기

> 백그라운드로 명령어를 실행해서 병렬적으로 실행되는 멀티 프로세스 환경을 만들어보자.## 환경- Linux 기반 시스템- Bash shell(/bin/bash)## 멀티프로세스? 병렬처리? 멀티스레드? 백그라운드 프로세스?- 여기서 진행할 방식...… Continue reading