Linux 란
탄생
- 1991년, Linus Tovalds에 의해 탄생
종류
- Debian 계열: Debian, Ubuntu, KNOPPIX, CD Linux
- Red Hat 계열: Fedora, RedHat, CentOS, Vine Linux
- Slackware: openSUSE, SUSE Linux Enterprise
Linux Shell 종류
- sh (Bourne shell): By Unix Shell, Super shell
- bash (Bourne-again shell): Super shell in Linux
- csh (C shell): C like syntax
- tcsh (Enhanced-C shell)
- ksh (korn shell)
- zch (Z shell)
Linux File System Directories
- /bin: 기본 명령어
- /boot: 부팅 용
- /dev: device file, cd-rom
- /etc: config, passwd, rc.d
- /home: user home dir
- /lib: shared library
- /media: ssd
- /opt: application software package
- /proc: process info
- /root: root home dir
- /sbin: 관리자용, ifconfig
- /srv: system data
- /tmp: temporary dir
- /usr: source or programs
- /usr/local
- /var: logs, ftp, spool, mail (용량이 큰 파일을 주로 이곳에 둠)
- /lost+found
Linux Ports (INNA 협회에서 제공한 port)
- FTP (data): 20번
- FTP (Control): 21번
- SSH: 22번
- Telnet: 23번
- SMTP: 25번
- DNS: 53번
- HTTP: 80번
- HTTPS: 443번