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Linux中netstat命令操作實(shí)例匯總(5)

時(shí)間:2014-12-30 15:59:47 作者:qipeng 來源:系統(tǒng)之家 1. 掃描二維碼隨時(shí)看資訊 2. 請(qǐng)使用手機(jī)瀏覽器訪問: https://m.xitongzhijia.net/xtjc/20141230/33733.html 手機(jī)查看 評(píng)論

  輸出:

  代碼如下:

 。踨oot@localhost ~]# netstat -l

  Active Internet connections (only servers)

  Proto Recv-Q Send-Q Local Address Foreign Address State

  tcp 0 0 localhost:smux *:* LISTEN

  tcp 0 0 *:svn *:* LISTEN

  tcp 0 0 *:ssh *:* LISTEN

  udp 0 0 localhost:syslog *:*

  udp 0 0 *:snmp *:*

  Active UNIX domain sockets (only servers)

  Proto RefCnt Flags Type State I-Node Path

  unix 2 [ ACC ] STREAM LISTENING 708833 /tmp/ssh-yKnDB15725/agent.15725

  unix 2 [ ACC ] STREAM LISTENING 7296 /var/run/audispd_events

 。踨oot@localhost ~]#

  實(shí)例9:顯示所有已建立的有效連接

  命令:netstat -n

  輸出:

  代碼如下:

 。踨oot@localhost ~]# netstat -n

  Active Internet connections (w/o servers)

  Proto Recv-Q Send-Q Local Address Foreign Address State

  tcp 0 268 192.168.120.204:22 10.2.0.68:62420 ESTABLISHED

  Active UNIX domain sockets (w/o servers)

  Proto RefCnt Flags Type State I-Node Path

  unix 2 [ ] DGRAM 1491 @/org/kernel/udev/udevd

  unix 4 [ ] DGRAM 7337 /dev/log

  unix 2 [ ] DGRAM 708823

  unix 2 [ ] DGRAM 7539

  unix 3 [ ] STREAM CONNECTED 7287

  unix 3 [ ] STREAM CONNECTED 7286

 。踨oot@localhost ~]#

  實(shí)例10:顯示關(guān)于以太網(wǎng)的統(tǒng)計(jì)數(shù)據(jù)

  命令:netstat -e

  輸出:

  代碼如下:

  [root@localhost ~]# netstat -e

  Active Internet connections (w/o servers)

  Proto Recv-Q Send-Q Local Address Foreign Address State User Inode

  tcp 0 248 192.168.120.204:ssh 10.2.0.68:62420 ESTABLISHED root 708795

  Active UNIX domain sockets (w/o servers)

  Proto RefCnt Flags Type State I-Node Path

  unix 2 [ ] DGRAM 1491 @/org/kernel/udev/udevd

  unix 4 [ ] DGRAM 7337 /dev/log

  unix 2 [ ] DGRAM 708823

  unix 2 [ ] DGRAM 7539

  unix 3 [ ] STREAM CONNECTED 7287

  unix 3 [ ] STREAM CONNECTED 7286

 。踨oot@localhost ~]#

  說明:

  用于顯示關(guān)于以太網(wǎng)的統(tǒng)計(jì)數(shù)據(jù)。它列出的項(xiàng)目包括傳送的數(shù)據(jù)報(bào)的總字節(jié)數(shù)、錯(cuò)誤數(shù)、刪除數(shù)、數(shù)據(jù)報(bào)的數(shù)量和廣播的數(shù)量。這些統(tǒng)計(jì)數(shù)據(jù)既有發(fā)送的數(shù)據(jù)報(bào)數(shù)量,也有接收的數(shù)據(jù)報(bào)數(shù)量。這個(gè)選項(xiàng)可以用來統(tǒng)計(jì)一些基本的網(wǎng)絡(luò)流量)

  實(shí)例11:顯示關(guān)于路由表的信息

  命令:netstat -r

  輸出:

  代碼如下:

 。踨oot@localhost ~]# netstat -r

  Kernel IP routing table

  Destination Gateway Genmask Flags MSS Window irtt Iface

  192.168.120.0 * 255.255.255.0 U 0 0 0 eth0

  192.168.0.0 192.168.120.1 255.255.0.0 UG 0 0 0 eth0

  10.0.0.0 192.168.120.1 255.0.0.0 UG 0 0 0 eth0

  default 192.168.120.240 0.0.0.0 UG 0 0 0 eth0

  [root@localhost ~]#

  實(shí)例12:列出所有 tcp 端口

  命令:netstat -at

  輸出:

  代碼如下:

 。踨oot@localhost ~]# netstat -at

  Active Internet connections (servers and established)

  Proto Recv-Q Send-Q Local Address Foreign Address State

  tcp 0 0 localhost:smux *:* LISTEN

  tcp 0 0 *:svn *:* LISTEN

  tcp 0 0 *:ssh *:* LISTEN

  tcp 0 284 192.168.120.204:ssh 10.2.0.68:62420 ESTABLISHED

  [root@localhost ~]#

  實(shí)例13:統(tǒng)計(jì)機(jī)器中網(wǎng)絡(luò)連接各個(gè)狀態(tài)個(gè)數(shù)

  命令:netstat -a | awk ‘/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}’

  輸出:

  代碼如下:

 。踨oot@localhost ~]# netstat -a | awk ‘/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}’

  ESTABLISHED 1

  LISTEN 3

 。踨oot@localhost ~]#

  實(shí)例14:把狀態(tài)全都取出來后使用uniq -c統(tǒng)計(jì)后再進(jìn)行排序

  命令:netstat -nat |awk ‘{print $6}’|sort|uniq -c

  輸出:

  代碼如下:

  [root@andy ~]# netstat -nat |awk ‘{print $6}’|sort|uniq -c

  14 CLOSE_WAIT

  1 established)

  578 ESTABLISHED

  1 Foreign

  43 LISTEN

  5 TIME_WAIT

 。踨oot@andy ~]# netstat -nat |awk ‘{print $6}’|sort|uniq -c|sort -rn

  576 ESTABLISHED

  43 LISTEN

  14 CLOSE_WAIT

  5 TIME_WAIT

  1 Foreign

  1 established)

  [root@andy ~]#

標(biāo)簽 命令 netstat

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