在Ubuntu命令行上启动wireshark时出现"无法打开显示"错误

Question

我在Ubuntu上安装了wireshark,当我运行它时:

/usr/bin/wireshark

我收到一个错误:

(wireshark:27945): Gtk-WARNING **: cannot open display:

我想在命令提示符下运行wireshark.

我不想使用UI.我不确定它为什么抱怨显示器,我想在端口上运行它.

Answer 1

你可以试试tshark - 这是一个"控制台的wireshark",这是wireshark项目的一部分.

你应该阅读Read man tshark.

例如,在80端口运行时捕获http数据包:

tshark -f 'tcp port 80 and http'

PS示例被修复为使用捕获过滤器而不是显示过滤器.

Answer 2

在Ubuntu上，运行wirehark抱怨显示：

el@apollo:~$ wireshark
(wireshark:20619): Gtk-WARNING **: cannot open display:

设置DISPLAY环境变量：

export DISPLAY=:0.0
/usr/bin/wireshark

然后工作：

el@apollo:~$ wireshark -Y
wireshark: option requires an argument -- 'Y'

Usage: wireshark [options] ... [ <infile> ]

Capture interface:
  -i <interface>           name or idx of interface (def: first non-loopback)
  -f <capture filter>      packet filter in libpcap filter syntax
  -s <snaplen>             packet snapshot length (def: 65535)
  -p                       don't capture in promiscuous mode
  -k                       start capturing immediately (def: do nothing)
  -S                       update packet display when new packets are captured
  -l                       turn on automatic scrolling while -S is in use
  -I                       capture in monitor mode, if available
  -B <buffer size>         size of kernel buffer (def: 2MB)
  -y <link type>           link layer type (def: first appropriate)
  -D                       print list of interfaces and exit
  -L                       print list of link-layer types of iface and exit

Wireshark是一个X应用程序，因此它需要知道将X11显示输出发送到哪里。