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
学习啦在线学习网 IpInDelivers 133243 0.0
学习啦在线学习网 IpOutRequests 92904 0.0
IcmpOutErrors 97 0.0
IcmpOutTimeExcds 97 0.0
学习啦在线学习网 IcmpMsgOutType3 97 0.0
TcpActiveOpens 538 0.0
TcpEstabResets 56 0.0
学习啦在线学习网 TcpInSegs 129837 0.0
学习啦在线学习网 TcpOutSegs 89720 0.0
TcpRetransSegs 42 0.0
学习啦在线学习网 TcpOutRsts 704 0.0
UdpInDatagrams 3255 0.0
UdpNoPorts 97 0.0
学习啦在线学习网 UdpOutDatagrams 3270 0.0
Ip6OutNoRoutes 206 0.0
TcpExtTW 141 0.0
学习啦在线学习网 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
TcpExtTCPSackRecovery 1 0.0
学习啦在线学习网 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
TcpExtTCPTimeouts 33 0.0
TcpExtTCPDSACKOldSent 40 0.0
TcpExtTCPDSACKRecv 5 0.0
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
学习啦在线学习网 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)
TCP: 65 (estab 40, closed 7, orphaned 0, synrecv 0, timewait 6/0), ports 56
Transport Total IP IPv6
* 804 - -
RAW 1 1 0
学习啦在线学习网 UDP 12 9 3
TCP 58 52 6
INET 71 62 9
学习啦在线学习网 FRAG 0 0 0
netstat 命令 : 不错的显示套接字信息的旧工具
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:
学习啦在线学习网 Kernel Interface table
学习啦在线学习网 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
学习啦在线学习网 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:
# netstat -s
输出样例:
Ip:
学习啦在线学习网 1092065 total packets received
学习啦在线学习网 0 forwarded
0 incoming packets discarded
学习啦在线学习网 1091681 incoming packets delivered
798913 requests sent out
895 dropped because of missing route
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.
学习啦在线学习网 ICMP input histogram:
学习啦在线学习网 timeout in transit: 8
echo replies: 9
学习啦在线学习网 1747 ICMP messages sent
学习啦在线学习网 0 ICMP messages failed
学习啦在线学习网 ICMP output histogram:
destination unreachable: 1730
学习啦在线学习网 echo request: 17
学习啦在线学习网 IcmpMsg:
InType0: 9
学习啦在线学习网 InType11: 8
学习啦在线学习网 OutType3: 1730
OutType8: 17
Tcp:
4822 active connections openings
1129 passive connection openings
457 failed connection attempts
165 connection resets received
7 connections established
1062519 segments received
771394 segments send out
7158 segments retransmited
学习啦在线学习网 6 bad segments received.
2578 resets sent
Udp:
20846 packets received
学习啦在线学习网 1730 packets to unknown port received.
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
2109 TCP sockets finished time wait in fast timer
84 packets rejects in established connections because of timestamp
19454 delayed acks sent
学习啦在线学习网 6 delayed acks further delayed because of locked socket
Quick ack mode was activated 7306 times
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
学习啦在线学习网 24412 acknowledgments not containing data payload received
10150 predicted acknowledgments
学习啦在线学习网 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
学习啦在线学习网 156 timeouts after SACK recovery
116 timeouts in loss state
461 fast retransmits
学习啦在线学习网 5 forward retransmits
学习啦在线学习网 608 retransmits in slow start
学习啦在线学习网 2073 other TCP timeouts
62 SACK retransmits failed
学习啦在线学习网 43074 packets collapsed in receive queue due to low socket buffer
8499 DSACKs sent for old packets
101 DSACKs sent for out of order packets
学习啦在线学习网 308 DSACKs received
学习啦在线学习网 9 DSACKs for out of order packets received
427 connections reset due to unexpected data
122 connections reset due to early user close
28 connections aborted due to timeout
TCPDSACKIgnoredOld: 3
学习啦在线学习网 TCPDSACKIgnoredNoUndo: 60
TCPSpuriousRTOs: 4
TCPSackShifted: 282
学习啦在线学习网 TCPSackMerged: 740
学习啦在线学习网 TCPSackShiftFallback: 1017
IpExt:
InMcastPkts: 47
学习啦在线学习网 OutMcastPkts: 51
学习啦在线学习网 InBcastPkts: 1
InOctets: 1341508973
学习啦在线学习网 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:
# 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
学习啦在线学习网 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
学习啦在线学习网 collisions:0 txqueuelen:1000
学习啦在线学习网 RX bytes:1186255648 (1.1 GiB) TX bytes:73968238 (70.5 MiB)
学习啦在线学习网 Interrupt:17
学习啦在线学习网 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
collisions:0 txqueuelen:0
RX bytes:1399578 (1.3 MiB) TX bytes:1399578 (1.3 MiB)
ppp0 Link encap:Point-to-Point Protocol
学习啦在线学习网 inet addr:10.1.11.70 P-t-P:10.0.31.18 Mask:255.255.255.255
学习啦在线学习网 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1496 Metric:1
RX packets:3784 errors:0 dropped:0 overruns:0 frame:0
学习啦在线学习网 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)
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:
1: lo: mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
1444187 9960 0 0 0 0
TX: bytes packets errors dropped carrier collsns
1444187 9960 0 0 0 0
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
RX: bytes packets errors dropped overrun mcast
学习啦在线学习网 1221956483 991501 0 0 0 24
TX: bytes packets errors dropped carrier collsns
75623937 720272 0 0 0 0
3: wlan0: mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:21:6a:ca:9b:10 brd ff:ff:ff:ff:ff:ff
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
学习啦在线学习网 0 0 0 0 0 0
学习啦在线学习网 4: pan0: mtu 1500 qdisc noop state DOWN
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
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
学习啦在线学习网 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
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)
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
12:10:01 CDT eth0 127.13 121.32 95.45 18.34 0.00 0.00 0.00
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
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
学习啦在线学习网 12:30:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12:30:01 CDT eth0 147.85 132.49 115.78 20.45 0.00 0.00 0.00
学习啦在线学习网 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
学习啦在线学习网 12:40:01 CDT eth1 101.65 115.32 17.58 104.50 0.00 0.00 0.00
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
12:50:01 CDT eth1 101.41 111.31 17.54 96.78 0.00 0.00 0.00
学习啦在线学习网 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
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 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
学习啦在线学习网 01:20:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
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
01:10:01 CDT lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
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
学习啦在线学习网 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
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
学习啦在线学习网 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
学习啦在线学习网 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
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)
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
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
学习啦在线学习网 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
学习啦在线学习网 01:44:05 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
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
学习啦在线学习网 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
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