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本篇内容介绍了“Linux iftop命令怎么使用”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
iftop命令 是一款实时流量监控工具,监控TCP/IP连接等,缺点就是无报表功能。必须以root身份才能运行。
一款实时流量监控工具
iftop(选项)
iftop: display bandwidth usage on an interface by host Synopsis: iftop -h | [-npblNBP] [-i interface] [-f filter code] [-F net/mask] [-G net6/mask6] -h display this message -n don't do hostname lookups -N don't convert port numbers to services -p run in promiscuous mode (show traffic between other hosts on the same network segment) -b don't display a bar graph of traffic -B Display bandwidth in bytes -i interface listen on named interface -f filter code use filter code to select packets to count (default: none, but only IP packets are counted) -F net/mask show traffic flows in/out of IPv4 network -G net6/mask6 show traffic flows in/out of IPv6 network -l display and count link-local IPv6 traffic (default: off) -P show ports as well as hosts -m limit sets the upper limit for the bandwidth scale -c config file specifies an alternative configuration file -t use text interface without ncurses Sorting orders: -o 2s Sort by first column (2s traffic average) -o 10s Sort by second column (10s traffic average) [default] -o 40s Sort by third column (40s traffic average) -o source Sort by source address -o destination Sort by destination address The following options are only available in combination with -t -s num print one single text output afer num seconds, then quit -L num number of lines to print
第一行为带宽,这里为1Mbit,不是字节哦. 连接列表,最后三列分别是2秒,10秒和40秒的平均流量 => 代表发送 代表接收 最后三行表示发送,接收和全部的流量, 第二列为你运行iftop到目前流量,第三列为高峰值,第四列为平均值。
iftop # 默认是监控第一块网卡的流量 iftop -i eth2 # 监控eth2 iftop -n # 直接显示IP, 不进行DNS反解析 iftop -N # 直接显示连接埠编号, 不显示服务名称 iftop -F 192.168.1.0/24 or 192.168.1.0/255.255.255.0 # 显示某个网段进出封包流量
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