mount_smbfs //guest@macbook-pro.local/Files /tmp/files
ls /tmp/files
fileA    fileB

click MacBook-Pro -> Connect As -> Guest -> Connect
double click Files
ls /Volumes/Files
fileA    fileB

mount_smbfs //admin@macbook-pro.local/Files /tmp/files
Password for MacBook-pro.local:
mount_smbfs: server rejected the connection: Authentication error

click MacBook-Pro -> Connect As -> Registered User
Username: admin
Password: password
 -> Connect
double click Files
ls /Volumes/Files
fileA    fileB

Share files and folders using SMB
  Number of users connected: 1