Fedora Core 서버 기본 명령어들.

ㅁ 패키지 설치 여부 확인
rpm -qa | grep 정규표현식

ㅁ 포트 현황 확인
nmap localhost

ㅁ Shell redirection
구글에서 shell redirection을 검색해봤더니 나왔습니다.

Send stdout to file
> file
Send stderr to file
2> file
Send both to file
> file 2>&1

Append stdout to file
>> file
Append stderr to file
2>> file
Append both to file
>> file 2>&1

Pipe stdout to P2
| prog2
Pipe both to P2
2>&1 | P2

Take stdin from file
< file
Read stdin from kbd until c
<< c