some useful cmds
时间：2006-03-08 来源：rwen2012
du -hs /home/user
top #monitoring the system
nmap <IP> #scan the host's opening ports
netstat [-t|-u]
iptables -F #close the firewall
iptables -L #List the firewall's rules
tcpdump
...
top #monitoring the system
nmap <IP> #scan the host's opening ports
netstat [-t|-u]
iptables -F #close the firewall
iptables -L #List the firewall's rules
tcpdump
...
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