How to list network shared items in terminal

In terminal, use ls to get a directory listing.

The mounted volumes are under /Volumes so you want to use

ls /Volumes to see the attached network drives.

EDIT based on OPs comment

ahh, so you want to see a listing of the servers available (or more accurately, the servers which are registered for discovery). I believe the 'Networks' tab reflects Bonjour discovery services.

So, based on this Hint about Bonjour and This StackOverflow Q/A you are probably looking for dns-sd but you would need to identify which services (ssh, afp, lpr etc) you are expecting to find.

try: dns-sd -B _ssh._tcp . or dns-sd -B _afpovertcp._tcp .

Please note, the man page for dns-sd states:

The dns-sd command is primarily intended for interactive use. Because its command-line arguments and output format are subject to change, invoking it from a shell script will generally be fragile.