上一篇
linux 如何查看网络流量
Linux 中，可以使用
iftop 命令查看实时网络流量，或使用
nload 命令进行图形化显示。
Linux系统中，有多种方法可以查看网络流量,以下是一些常用的方法和工具：
使用 ifconfig 命令
ifconfig 是一个传统的网络配置命令，可以用来查看网络接口的流量信息，虽然它已经被 ip 命令取代,但仍然在一些系统上可用。
ifconfig
输出示例：
eth0 Link encap:Ethernet HWaddr 00:0c:29:68:23:45
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:123456 bytes:12345678 (12.3 MB)
TX packets:654321 bytes:65432100 (62.4 MB)使用 ip 命令
ip 命令是 ifconfig 的现代替代品，功能更强大,也可以用来查看网络流量。
ip -s link show eth0
输出示例：
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:68:23:45 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
12345678 123456 0 0 0 0
TX: bytes packets errors dropped carrier collsns
65432100 654321 0 0 0 0使用 netstat 命令
netstat 命令可以显示网络连接、路由表、接口统计等信息。
netstat -i
输出示例：
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 123456 0 0 0 654321 0 0 0 BMRU使用 vnstat 工具
vnstat 是一个专门用于监控网络流量的工具,可以实时查看和记录网络流量。
安装 vnstat：
sudo apt-get install vnstat
查看实时流量：
vnstat -l
输出示例：
rxBytes/s txBytes/s rxPackets/s txPackets/s
eth0: 12.3 62.4 0.1 0.2使用 nload 工具
nload 是一个实时网络流量监控工具,可以图形化显示网络流量。
安装 nload：
sudo apt-get install nload
运行 nload：
nload eth0
输出示例：
eth0
-----------------------
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
