wireshark在ubuntu系統中的正確安裝方法

　　之前一直在使用wireshark這個網絡工具，最近在用來抓包學習MQTT協議的時候，發現wireshark暫時還未加入對MQTT協議分析的原生支持，網上搜了一下，能夠本身用插件的形式擴展wireshark的協議支持，可是幾經周折以後發現原來我安裝wireshark的方式有問題，以非root用戶啓動wireshark後發現沒權限獲取網卡使用權；以root用戶啓動後會提示風險，禁用某些功能，好比插件功能就是有問題的。

　　It dosn't work well on ubuntu14.04 (actually before 16.04).It warns:

(wireshark:5785): Gtk-CRITICAL **: gtk_orientable_get_orientation: assertion 'GTK_IS_ORIENTABLE (orientable)' failed

(wireshark:5785): GLib-GObject-WARNING **: invalid unclassed pointer in cast to 'GtkScrollbar'

(wireshark:5785): GLib-GObject-WARNING **: invalid unclassed pointer in cast to 'GtkWidget'

(wireshark:5785): GLib-GObject-WARNING **: invalid unclassed pointer in cast to 'GObject'

　　solution: set the environment variable "LIBOVERLAY_SCROLLBAR" to "0"

　　一、sudo vim /usr/share/applications/wireshark.desktop

　　２、change "Exec=wireshark %f" to "Exec=env LIBOVERLAY_SCROLLBAR=0 wireshark %f"

 

　　正確安裝wireshark的方法是：

$ sudo apt-get install wireshark
$ sudo dpkg-reconfigure wireshark-common
$ sudo usermod -a -G wireshark $USER
$ sudo reboot