Linux下常用网络命令
linux命令在系统中有两种类型：内置Shell命令和Linux命令。接下来是小编为大家收集的Linux下常用网络命令，希望能帮到大家。
Linux下常用网络命令
你可以使用以下任何一个命令：
学习啦在线学习网 nstat 命令 : 网络统计工具
键入以下命令:
代码如下:
# nstat
输出样例:
#kernel
IpInReceives 133243 0.0
IpInDelivers 133243 0.0
IpOutRequests 92904 0.0
IcmpOutErrors 97 0.0
学习啦在线学习网 IcmpOutTimeExcds 97 0.0
IcmpMsgOutType3 97 0.0
学习啦在线学习网 TcpActiveOpens 538 0.0
TcpEstabResets 56 0.0
TcpInSegs 129837 0.0
TcpOutSegs 89720 0.0
学习啦在线学习网 TcpRetransSegs 42 0.0
学习啦在线学习网 TcpOutRsts 704 0.0
学习啦在线学习网 UdpInDatagrams 3255 0.0
UdpNoPorts 97 0.0
UdpOutDatagrams 3270 0.0
Ip6OutNoRoutes 206 0.0
学习啦在线学习网 TcpExtTW 141 0.0
TcpExtDelayedACKs 508 0.0
TcpExtDelayedACKLocked 1 0.0
TcpExtDelayedACKLost 42 0.0
TcpExtTCPHPHits 117659 0.0
学习啦在线学习网 TcpExtTCPPureAcks 2158 0.0
TcpExtTCPHPAcks 605 0.0
学习啦在线学习网 TcpExtTCPSackRecovery 1 0.0
TcpExtTCPLossUndo 16 0.0
TcpExtTCPSackFailures 4 0.0
学习啦在线学习网 TcpExtTCPFastRetrans 1 0.0
学习啦在线学习网 TcpExtTCPSlowStartRetrans 3 0.0
学习啦在线学习网 TcpExtTCPTimeouts 33 0.0
TcpExtTCPDSACKOldSent 40 0.0
学习啦在线学习网 TcpExtTCPDSACKRecv 5 0.0
学习啦在线学习网 TcpExtTCPAbortOnData 120 0.0
学习啦在线学习网 TcpExtTCPAbortOnClose 55 0.0
TcpExtTCPSackShiftFallback 9 0.0
IpExtInOctets 180131682 0.0
学习啦在线学习网 IpExtOutOctets 7289106 0.0
ss 命令 : 查询套接字工具
要查看统计汇总, 输入:
代码如下:
# ss -s
输出样例:
学习啦在线学习网 Total: 786 (kernel 804)
学习啦在线学习网 TCP: 65 (estab 40, closed 7, orphaned 0, synrecv 0, timewait 6/0), ports 56
学习啦在线学习网 Transport Total IP IPv6
* 804 - -
学习啦在线学习网 RAW 1 1 0
UDP 12 9 3
TCP 58 52 6
学习啦在线学习网 INET 71 62 9
FRAG 0 0 0
netstat 命令 : 不错的显示套接字信息的旧工具
学习啦在线学习网 查看所有网络端口以及汇总信息表，输入：
代码如下:
# netstat -i
输出样例:
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
学习啦在线学习网 eth0 1500 0 941022 0 0 0 688165 0 0 0 BMRU
lo 16436 0 9304 0 0 0 9304 0 0 0 LRU
ppp0 1496 0 3784 0 0 0 4177 0 0 0 MOPRU
查看每个协议的汇总统计信息，输入：
代码如下:
学习啦在线学习网 # netstat -s
输出样例:
Ip:
学习啦在线学习网 1092065 total packets received
0 forwarded
0 incoming packets discarded
学习啦在线学习网 1091681 incoming packets delivered
学习啦在线学习网 798913 requests sent out
学习啦在线学习网 895 dropped because of missing route
学习啦在线学习网 759 reassemblies required
375 packets reassembled ok
Icmp:
学习啦在线学习网 17 ICMP messages received
0 input ICMP message failed.
ICMP input histogram:
学习啦在线学习网 timeout in transit: 8
学习啦在线学习网 echo replies: 9
1747 ICMP messages sent
学习啦在线学习网 0 ICMP messages failed
ICMP output histogram:
destination unreachable: 1730
echo request: 17
IcmpMsg:
InType0: 9
InType11: 8
学习啦在线学习网 OutType3: 1730
学习啦在线学习网 OutType8: 17
Tcp:
学习啦在线学习网 4822 active connections openings
学习啦在线学习网 1129 passive connection openings
学习啦在线学习网 457 failed connection attempts
165 connection resets received
7 connections established
1062519 segments received
771394 segments send out
7158 segments retransmited
6 bad segments received.
学习啦在线学习网 2578 resets sent
Udp:
20846 packets received
1730 packets to unknown port received.
学习啦在线学习网 0 packet receive errors
19242 packets sent
UdpLite:
TcpExt:
71 invalid SYN cookies received
8 resets received for embryonic SYN_RECV sockets
142 packets pruned from receive queue because of socket buffer overrun
学习啦在线学习网 2109 TCP sockets finished time wait in fast timer
84 packets rejects in established connections because of timestamp
19454 delayed acks sent
6 delayed acks further delayed because of locked socket
Quick ack mode was activated 7306 times
学习啦在线学习网 1 packets directly queued to recvmsg prequeue.
1 bytes directly received in process context from prequeue
学习啦在线学习网 823921 packet headers predicted
24412 acknowledgments not containing data payload received
10150 predicted acknowledgments
242 times recovered from packet loss by selective acknowledgements
学习啦在线学习网 33 congestion windows recovered without slow start by DSACK
学习啦在线学习网 335 congestion windows recovered without slow start after partial ack
学习啦在线学习网 336 TCP data loss events
学习啦在线学习网 TCPLostRetransmit: 35
1 timeouts after reno fast retransmit
156 timeouts after SACK recovery
116 timeouts in loss state
461 fast retransmits
学习啦在线学习网 5 forward retransmits
608 retransmits in slow start
2073 other TCP timeouts
62 SACK retransmits failed
43074 packets collapsed in receive queue due to low socket buffer
8499 DSACKs sent for old packets
学习啦在线学习网 101 DSACKs sent for out of order packets
308 DSACKs received
学习啦在线学习网 9 DSACKs for out of order packets received
学习啦在线学习网 427 connections reset due to unexpected data
122 connections reset due to early user close
学习啦在线学习网 28 connections aborted due to timeout
TCPDSACKIgnoredOld: 3
TCPDSACKIgnoredNoUndo: 60
TCPSpuriousRTOs: 4
TCPSackShifted: 282
TCPSackMerged: 740
TCPSackShiftFallback: 1017
IpExt:
InMcastPkts: 47
OutMcastPkts: 51
学习啦在线学习网 InBcastPkts: 1
学习啦在线学习网 InOctets: 1341508973
OutOctets: 72525352
学习啦在线学习网 InMcastOctets: 8649
OutMcastOctets: 7519
学习啦在线学习网 InBcastOctets: 328
学习啦在线学习网 ip / ifconfig 命令 : 配置或者显示网络端口信息
键入以下命令:
代码如下:
学习啦在线学习网 # ifconfig
或者
复制代码
代码如下:
学习啦在线学习网 # /sbin/ifconfig
或者
代码如下:
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr b8:ac:6f:65:31:e5
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
学习啦在线学习网 inet6 addr: fe80::baac:6fff:fe65:31e5/64 Scope:Link
学习啦在线学习网 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:966334 errors:0 dropped:0 overruns:0 frame:0
TX packets:703297 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1186255648 (1.1 GiB) TX bytes:73968238 (70.5 MiB)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:9666 errors:0 dropped:0 overruns:0 frame:0
TX packets:9666 errors:0 dropped:0 overruns:0 carrier:0
学习啦在线学习网 collisions:0 txqueuelen:0
学习啦在线学习网 RX bytes:1399578 (1.3 MiB) TX bytes:1399578 (1.3 MiB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.1.11.70 P-t-P:10.0.31.18 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1496 Metric:1
学习啦在线学习网 RX packets:3784 errors:0 dropped:0 overruns:0 frame:0
TX packets:4177 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:2400265 (2.2 MiB) TX bytes:275983 (269.5 KiB)
学习啦在线学习网 显示网络端口统计信息，输入：
代码如下:
学习啦在线学习网 # ip -s link
输出样例:
学习啦在线学习网 1: lo: mtu 16436 qdisc noqueue state UNKNOWN
学习啦在线学习网 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
学习啦在线学习网 1444187 9960 0 0 0 0
学习啦在线学习网 TX: bytes packets errors dropped carrier collsns
1444187 9960 0 0 0 0
学习啦在线学习网 2: eth0: mtu 1500 qdisc mq state UP qlen 1000
学习啦在线学习网 link/ether b8:ac:6f:65:31:e5 brd ff:ff:ff:ff:ff:ff
学习啦在线学习网 RX: bytes packets errors dropped overrun mcast
1221956483 991501 0 0 0 24
TX: bytes packets errors dropped carrier collsns
学习啦在线学习网 75623937 720272 0 0 0 0
3: wlan0: mtu 1500 qdisc noop state DOWN qlen 1000
学习啦在线学习网 link/ether 00:21:6a:ca:9b:10 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
4: pan0: mtu 1500 qdisc noop state DOWN
学习啦在线学习网 link/ether 4a:c7:5f:0e:8e:d8 brd ff:ff:ff:ff:ff:ff
学习啦在线学习网 RX: bytes packets errors dropped overrun mcast
学习啦在线学习网 0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
8: ppp0: mtu 1496 qdisc pfifo_fast state UNKNOWN qlen 3
link/ppp
RX: bytes packets errors dropped overrun mcast
学习啦在线学习网 2419881 3848 0 0 0 0
学习啦在线学习网 TX: bytes packets errors dropped carrier collsns
284151 4287 0 0 0 0
sar 命令: 显示网络统计信息
学习啦在线学习网 输入以下命令 (你需要 通过sysstat包安装并启用sar):
代码如下:
学习啦在线学习网 sar -n DEV
Linux 2.6.32-220.2.1.el6.x86_64 (www.cyberciti.biz) Tuesday 13 March 2012 _x86_64_ (2 CPU)
学习啦在线学习网 12:00:01 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
学习啦在线学习网 12:10:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 12:10:01 CDT eth0 127.13 121.32 95.45 18.34 0.00 0.00 0.00
学习啦在线学习网 12:10:01 CDT eth1 98.48 110.62 16.72 96.33 0.00 0.00 0.00
12:20:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 12:20:01 CDT eth0 139.95 133.41 106.30 19.95 0.00 0.00 0.00
12:20:01 CDT eth1 110.65 121.85 18.14 107.13 0.00 0.00 0.00
12:30:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 12:30:01 CDT eth0 147.85 132.49 115.78 20.45 0.00 0.00 0.00
12:30:01 CDT eth1 111.88 127.39 18.61 117.65 0.00 0.00 0.00
12:40:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 12:40:01 CDT eth0 136.75 124.64 105.24 19.48 0.00 0.00 0.00
12:40:01 CDT eth1 101.65 115.32 17.58 104.50 0.00 0.00 0.00
学习啦在线学习网 12:50:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12:50:01 CDT eth0 131.45 125.69 96.49 19.58 0.00 0.00 0.00
学习啦在线学习网 12:50:01 CDT eth1 101.41 111.31 17.54 96.78 0.00 0.00 0.00
01:00:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 01:00:01 CDT eth0 140.30 133.27 102.17 20.75 0.00 0.00 0.00
学习啦在线学习网 01:00:01 CDT eth1 106.90 119.51 18.53 103.09 0.00 0.00 0.00
01:10:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:10:01 CDT eth0 152.03 127.74 125.56 19.85 0.00 0.00 0.00
学习啦在线学习网 01:10:01 CDT eth1 115.60 134.57 18.73 126.96 0.00 0.00 0.00
01:20:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 01:20:01 CDT eth0 138.55 130.55 103.03 20.20 0.00 0.00 0.00
....
..
....
..
.
学习啦在线学习网 01:00:01 CDT eth1 156.82 169.48 28.83 138.49 0.00 0.00 0.00
学习啦在线学习网 01:10:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 01:10:01 CDT eth0 215.19 194.82 163.11 30.99 0.00 0.00 0.00
01:10:01 CDT eth1 162.49 183.79 28.36 163.70 0.00 0.00 0.00
01:20:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:20:01 CDT eth0 200.20 192.23 140.64 30.93 0.00 0.00 0.00
学习啦在线学习网 01:20:01 CDT eth1 153.60 166.96 27.32 140.26 0.00 0.00 0.00
01:30:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:30:01 CDT eth0 111.98 103.58 79.12 16.52 0.00 0.00 0.48
01:30:01 CDT eth1 87.50 95.58 14.74 79.35 0.00 0.00 0.00
Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: eth0 211.21 196.20 156.18 31.20 0.00 0.00 0.01
Average: eth1 159.10 174.52 28.00 149.95 0.00 0.00 0.00
学习啦在线学习网 或者输入以下命令:
代码如下:
学习啦在线学习网 # sar -n DEV 1 3
输出样例:
Linux 2.6.32-220.2.1.el6.x86_64 (www.cyberciti.biz) Tuesday 13 March 2012 _x86_64_ (2 CPU)
学习啦在线学习网 01:44:03 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
01:44:04 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
学习啦在线学习网 01:44:04 CDT eth0 161.70 154.26 105.20 26.63 0.00 0.00 0.00
学习啦在线学习网 01:44:04 CDT eth1 145.74 142.55 25.11 144.94 0.00 0.00 0.00
01:44:04 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
01:44:05 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:44:05 CDT eth0 162.14 156.31 107.46 42.18 0.00 0.00 0.00
01:44:05 CDT eth1 135.92 138.83 39.38 104.92 0.00 0.00 0.00
01:44:05 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
学习啦在线学习网 01:44:06 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:44:06 CDT eth0 303.92 293.14 272.91 37.40 0.00 0.00 0.00
01:44:06 CDT eth1 252.94 290.20 34.87 263.50 0.00 0.00 0.00
学习啦在线学习网 Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: eth0 210.37 202.34 163.19 35.66 0.00 0.00 0.00
Average: eth1 178.93 191.64 33.36 171.60 0.00 0.00 0.00
学习啦在线学习网
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