OS 버전 확인 / CentOS / Ubuntu > 기술자료

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[ CentOS 6.x ]

1. lsb_release 로 버전 확인하기
[root@localhost local]# Isb_release -a
-bash: Isb_release: command not found

lsb_release 에러가 날때는 아래 2개의 패키지를 설치합니다.
# yum provides */lsb_release
# yum install redhat-lsb

[root@localhost local]# Isb_release -a
LSB Version:  :base-4.0-amd64:base-4.0-moarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 6.8 (Final)
Release: 6.8
Codename: Final


2. rpm 으로 버전 확인하기
[root@localhost local]# rpm -qa | grep release
CentOS Linux release 6.8 (Final)


3. cat 으로 버전 확인하기
[root@localhost local]# cat /etc/redhat-release
CentOS release 6.8 (Final)



[ CentOS 7.x ]

1. rpm 으로 버전 확인하기
[root@localhost local]# rpm -qa | grep release
centos-release-7-3.1611.el7.centos.x86_64


2. cat 으로 버전 확인하기
[root@localhost local]# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core) 



[ OS bit 확인하기 ]
[happyjung@www www]$ getconf LONG_BIT
32



[ Ubuntu 18.x ]

root@happyjung:/# /etc/*-release
bash: /etc/lsb-release: Permission denied

root@happyjung:/# cat /etc/*-release | uniq
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
NAME="Ubuntu"
VERSION="18.04.1 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.1 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic

root@happyjung:/# cat /etc/issue
Ubuntu 18.04.1 LTS \n \l

root@happyjung:/# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
root@izar_srv:/etc/apache2/conf-available# 



관련자료
https://kldp.org/node/109636 
https://kenno.wordpress.com/2012/10/21/centos-lsb_release-command-not-found/
http://ongal.tistory.com/190
https://zetawiki.com/wiki/리눅스_종류_확인,_리눅스_버전_확인
http://funnymins.tistory.com/102