linux下查看端口
1.netstat -anpl
root@coder-671T-M:~# netstat -anpl | grep 80 tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1380/apache2 tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN 1490/java tcp 0 0 192.168.2.153:53487 91.189.90.217:80 ESTABLISHED 3346/http tcp 0 0 192.168.2.153:50971 218.249.165.46:80 TIME_WAIT - tcp 0 0 192.168.2.153:40482 91.189.88.33:80 TIME_WAIT - tcp 0 0 192.168.2.153:48410 91.189.92.179:80 TIME_WAIT - tcp 0 0 192.168.2.153:37050 123.129.214.98:80 ESTABLISHED 3350/http tcp 0 0 192.168.2.153:40484 91.189.88.33:80 ESTABLISHED 3347/http tcp 1 0 192.168.2.153:40477 91.189.88.33:80 CLOSE_WAIT 3348/http tcp 0 190 192.168.2.153:36346 91.189.92.167:80 LAST_ACK - tcp 0 1 192.168.2.153:57367 91.189.92.166:80 SYN_SENT 3349/http unix 3 [ ] 流 已连接 15380 1138/X @/tmp/.X11-unix/X0 unix 3 [ ] 流 已连接 11180 1933/dbus-daemon @/tmp/dbus-UXsB7wqFp6 unix 3 [ ] 流 已连接 10807 1872/gnome-session @/tmp/.ICE-unix/1872 unix 3 [ ] 流 已连接 10804 1933/dbus-daemon @/tmp/dbus-UXsB7wqFp6 unix 3 [ ] 流 已连接 10802 1933/dbus-daemon @/tmp/dbus-UXsB7wqFp6 unix 3 [ ] 流 已连接 10801 1933/dbus-daemon @/tmp/dbus-UXsB7wqFp6 unix 3 [ ] 流 已连接 10800 1138/X @/tmp/.X11-unix/X0 unix 3 [ ] 流 已连接 10180 1925/dbus-daemon @/tmp/dbus-QCJgSbaeRf unix 3 [ ] 流 已连接 10480 1925/dbus-daemon unix 2 [ ] 流 已连接 9794 1802/colord unix 3 [ ] 流 已连接 9793 1802/colord unix 3 [ ] 流 已连接 9792 1802/colord unix 3 [ ] 流 已连接 9195 1802/colord unix 3 [ ] 流 已连接 7080 864/dbus-daemon
2.lsof -i:80
root@coder-671T-M:~# lsof -i:80 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME apache2 1380 root 3u IPv4 8025 0t0 TCP *:www (LISTEN) apache2 1417 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) apache2 1418 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) apache2 1419 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) apache2 1420 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) apache2 1421 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) chrome 2474 root 60u IPv4 34989 0t0 TCP coder-671T-M.local:38499->117.79.157.242:www (ESTABLISHED) chrome 2474 root 64u IPv4 34990 0t0 TCP coder-671T-M.local:38500->117.79.157.242:www (ESTABLISHED) apache2 3301 www-data 3u IPv4 8025 0t0 TCP *:www (LISTEN) http 3346 root 3u IPv4 34869 0t0 TCP coder-671T-M.local:53487->germanium.canonical.com:www (CLOSE_WAIT) http 3347 root 3u IPv4 34899 0t0 TCP coder-671T-M.local:40484->scandium.canonical.com:www (CLOSE_WAIT) http 3348 root 3u IPv4 34865 0t0 TCP coder-671T-M.local:40477->scandium.canonical.com:www (CLOSE_WAIT) http 3349 root 3u IPv4 34154 0t0 TCP coder-671T-M.local:36354->bignay.canonical.com:www (ESTABLISHED) http 3350 root 3u IPv4 34871 0t0 TCP coder-671T-M.local:37050->123.129.214.98:www (ESTABLISHED) root@coder-671T-M:~#
netstat的help信息
root@coder-671T-M:~# netstat --help
usage: netstat [-vWeenNcCF] [<Af>] -r netstat {-V|--version|-h|--help}
netstat [-vWnNcaeol] [<Socket> ...]
netstat { [-vWeenNac] -i | [-cWnNe] -M | -s }
-r, --route 显示路由表
-i, --interfaces display interface table
-g, --groups display multicast group memberships
-s, --statistics display networking statistics (like SNMP)
-M, --masquerade display masqueraded connections
-v, --verbose 显示详细信息
-W, --wide don't truncate IP addresses
-n, --numeric 不解析名称
--numeric-hosts 不解析主机名
--numeric-ports 忽略端口名称
--numeric-users 忽略用户名
-N, --symbolic resolve hardware names
-e, --extend 显示更多信息
-p, --programs display PID/Program name for sockets
-c, --continuous continuous listing
-l, --listening display listening server sockets
-a, --all, --listening display all sockets (default: connected)
-o, --timers display timers
-F, --fib display Forwarding Information Base (default)
-C, --cache display routing cache instead of FIB
<Socket>={-t|--tcp} {-u|--udp} {-w|--raw} {-x|--unix} --ax25 --ipx --netrom
<AF>=Use '-6|-4' or '-A <af>' or '--<af>'；默认： inet
列出所有支持的协议：
inet (DARPA Internet) inet6 (IPv6) ax25 (AMPR AX.25)
netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP)
x25 (CCITT X.25)
lsof的help信息
root@coder-671T-M:~# lsof --help
lsof: illegal option character: -
lsof: illegal option character: e
lsof: no process ID specified
lsof 4.81
latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/
latest FAQ: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ
latest man page: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_man
usage: [-?abhlnNoOPRtUvVX] [+|-c c] [+|-d s] [+D D] [+|-f[gG]]
[-F [f]] [-g [s]] [-i [i]] [+|-L [l]] [+m [m]] [+|-M] [-o [o]] [-p s]
[+|-r [t]] [-s [p:s]] [-S [t]] [-T [t]] [-u s] [+|-w] [-x [fl]] [--] [names]
Defaults in parentheses; comma-separated set (s) items; dash-separated ranges.
-?|-h list help -a AND selections (OR) -b avoid kernel blocks
-c c cmd c ^c /c/[bix] +c w COMMAND width (9)
+d s dir s files -d s select by FD set +D D dir D tree *SLOW?*
-i select IPv[46] files -l list UID numbers
-n no host names -N select NFS files -o list file offset
-O avoid overhead *RISK -P no port names -R list paRent PID
-s list file size -t terse listing -T disable TCP/TPI info
-U select Unix socket -v list version info -V verbose search
+|-w Warnings (+) -X skip TCP&UDP* files -- end option scan
+f|-f +filesystem or -file names +|-f[gG] flaGs
-F [f] select fields; -F? for help
+|-L [l] list (+) suppress (-) link counts < l (0 = all; default = 0)
+m [m] use|create mount supplement
+|-M portMap registration (-) -o o o 0t offset digits (8)
-p s exclude(^)|select PIDs -S [t] t second stat timeout (15)
-T qs TCP/TPI Q,St (s) info
-g [s] exclude(^)|select and print process group IDs
-i i select by IPv[46] address: [46][proto][@host|addr][:svc_list|port_list]
+|-r [t[m<fmt>]] repeat every t seconds (15); + until no files, - forever.
An optional suffix to t is m<fmt>; m must separate t from <fmt> and
<fmt> is an strftime(3) format for the marker line.
-s p:s exclude(^)|select protocol (p = TCP|UDP) states by name(s).
-u s exclude(^)|select login|UID set s
-x [fl] cross over +d|+D File systems or symbolic Links
names select named files or files on named file systems
Anyone can list all files; /dev warnings disabled; kernel ID check disabled.
root@coder-671T-M:~#