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linux-learn-basement

Posted at 2023-06-06

su

find

pyhton3 -m http.server

systemctl

&

将一个 process transfer into backgroud， and CTRL + Z has the same effect

fg

transfer a background process back to foreground

traceroute

nmap

  • -O detect Operating System

  • -sS syn scan

  • -sU UDP scan

  • -sV detect service/info version

  • -oA output the result in three major format

  • -oG output scan in general

  • -A aggressive mode: Enable OS detection, version detection, script scanning, and traceroute

  • -sX, -sF, -sN 发送不同的握手信息，如何端口关闭则会返回 RST

  • -sn using ping to detect host is up

  • -Pn not ping before scanning it

  • -f fragment the packet making it less likely that packet will be detected by the firewall

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扫描速度加快

nmap ip -sT -p-