Final answer:
The Linux utility that provides an output similar to Wireshark's is tcpdump, a command-line tool used for capturing and analyzing network packets. Tcpdump operates similarly to Wireshark, but without a GUI. Other utilities like ifconfig and traceroute serve different purposes and do not capture or analyze network packets.
Step-by-step explanation:
The Linux utility that provides output similar to Wireshark's is tcpdump. Tcpdump is a command-line packet analyzer tool that allows for the capture and analysis of network packets, similar to how Wireshark functions, albeit without the graphical user interface. It's widely used for network troubleshooting, packet analysis, and software and protocol development. The tool captures packets flowing through a specific network interface and can display them in real time or save them to a file for later analysis. Tcpdump uses a command syntax to filter traffic, which can be as simple or complex as the user requires.
While ifconfig is used for configuring network interfaces, traceroute is a utility for mapping the path data packets take to reach a particular host. Both are different from tcpdump and Wireshark as they do not capture or analyze the content of network packets. They serve other purposes within network management and diagnostics.