anydragon

tar 사용법

tar Basic compress

tar cvfz public_html.tgz public_html

1	tar cvfz public_html.tgz public_html

tar Basic compress with date

tar -czvf public_html_`date +%Y%m%d`.tgz public_html

1	tar -czvf public_html_`date +%Y%m%d`.tgz public_html

tar increase compress

tar -g /backup/snap-shot-www -czvf /backup/backup_www_0.tgz /var/www/
tar -g /backup/snap-shot-www -czvf /backup/backup_www_`date +%Y%m%d`.tgz /var/www/

1 2	tar -g /backup/snap-shot-www -czvf /backup/backup_www_0.tgz /var/www/ tar -g /backup/snap-shot-www -czvf /backup/backup_www_`date +%Y%m%d`.tgz /var/www/

tar compress remote backup

tar cvfz - /var/www | ssh user@host "cat > /backup/www.tgz"

1	tar cvfz - /var/www \| ssh user@host "cat > /backup/www.tgz"

tar compress remote decompress

tar cvfz - /var/www | ssh user@host "tar xvfz -"

1	tar cvfz - /var/www \| ssh user@host "tar xvfz -"

tar remote compress backup

ssh user@host "tar -zcf - /var/www/" > /_backup/www.tgz

1	ssh user@host "tar -zcf - /var/www/" > /_backup/www.tgz

iptables 목록들

Basic IP Block

iptables -A INPUT -i eth0 -p tcp -s 1.1.1.1 -j DROP

1	iptables -A INPUT -i eth0 -p tcp -s 1.1.1.1 -j DROP

Allow incoming SSH

iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1 --dport 22 -j ACCEPT

1	iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1 --dport 22 -j ACCEPT

Allow incoming SSH from a Sepcific Network

iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1/24 --dport 22 -j ACCEPT

1	iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1/24 --dport 22 -j ACCEPT

Combine Multiple Ports roles

iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1/24 --dport 22,80,443 -j ACCEPT

1	iptables -A INPUT -i eth0 -m state --state NEW,ESTABLISHED -m tcp -p tcp -s 1.1.1.1/24 --dport 22,80,443 -j ACCEPT

Load Balance Incoming Web Traffic

iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 0 -j DNAT --to-destination 192.168.1.101:443
iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 1 -j DNAT --to-destination 192.168.1.102:443
iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 2 -j DNAT --to-destination 192.168.1.103:443

iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 0 -j DNAT --to-destination 192.168.1.101:443

iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 1 -j DNAT --to-destination 192.168.1.102:443

iptables -A PREROUTING -i eth0 -p tcp --dport 443 -m state --state NEW -m nth --counter 0 --every 3 --packet 2 -j DNAT --to-destination 192.168.1.103:443

Prevent Dos Attack

iptables -A INPUT -p tcp --dport 80 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT

1	iptables -A INPUT -p tcp --dport 80 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT

Port Forwarding 422-> 22

iptables -t nat -A PREROUTING -p tcp -d 192.168.102.37 --dport 422 -j DNAT --to 192.168.102.37:22

1	iptables -t nat -A PREROUTING -p tcp -d 192.168.102.37 --dport 422 -j DNAT --to 192.168.102.37:22

history 조회시 날짜 시간 표시하기

출처] http://faq.hostway.co.kr/?mid=Linux_ETC&page=8&document_srl=1424

[ history 조회시 ‘날짜,시간’ 표시하기 ]
history로 사용자가 입력했던 명령어를 조회할때 “언제” 실행 했는지를 알아야 할 때가 있습니다.
/etc/profile에 HISTTIMEFORMAT 변수를 추가해 주면 history 조회시 해당 명령어를 입력한 날짜, 시간이 표시 됩니다.

1. /etc/profile에 아래 내용 추가

HISTTIMEFORMAT="%F %T -- "
export HISTTIMEFORMAT

1 2	HISTTIMEFORMAT="%F %T -- " export HISTTIMEFORMAT

2. 적용

$ source /etc/profile

1	$ source /etc/profile

3. 확인

424 2012-03-15 18:48:16 — vi /etc/profile
425 2012-03-15 18:48:22 — source /etc/profile
426 2012-03-15 18:48:25 — history

anydragon

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보관함

tar 사용법

iptables 목록들

history 조회시 날짜 시간 표시하기

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