Mount:
Nautilus > Go > Enter location > smb://192.168.0.123
Then can find the shared folder in /$XDG_RUNTIME_DIR/gvfs (ref: EvanChen link askubuntu.com/a/33513/372607)
Specifically on my 16.04
~$ cd /$XDG_RUNTIME_DIR/gvfs
//run/user/1000/gvfs$ ls
smb-share:server=192.168.0.123,share=pac
//run/user/1000/gvfs$ cd smb-share:server=192.168.0.123,share=pac
//run/user/1000/gvfs/smb-share:server=192.168.0.123,share=pac$ pwd
//run/user/1000/gvfs/smb-share:server=192.168.0.123,share=pac
Then make a softlink from home folder:
$ cd ~
$ ln -s //run/user/1000/gvfs/smb-share:server=192.168.0.123,share=pac pac
Now cd pac and done, can browse the network shared folder from command line.