You can start Wireshark from your shell or window manager.
|Power user tip|
When starting Wireshark it’s possible to specify optional settings using the command line. See Section 11.2, “Start Wireshark from the command line” for details.
The following chapters contain many screenshots of Wireshark. As Wireshark runs on many different platforms with many different window managers, different styles applied and there are different versions of the underlying GUI toolkit used, your screen might look different from the provided screenshots. But as there are no real differences in functionality these screenshots should still be well understandable.