[Centos] Where is ethereal?

Just for the record, from "man ethereal"

Ethereal is a "GUI network protocol analyzer".  It lets you
interactively browse packet data from a live network or from a
previously saved capture file.

And from "man tethereal"

Tethereal is a "network protocol analyzer".  It lets you capture packet
data from a live network, or read packets from a previously saved
capture file, either printing a decoded form of those packets to the
standard output or writing the packets to a file.