sudo mount -t cifs //192.168.0.20/share -o user=guest,password=0,file_mode=0777,dir_mode=0777,iocharset=utf8 /mnt/mit

//192.168.0.20/share  /mnt/mit  cifs  user=guest,password=0,file_mode=0777,dir_mode=0777,iocharset=utf8  0  0

$ sudo mount -av
mount.cifs kernel mount options: ip=192.168.0.20,unc=\192.168.0.20share,file_mode=0777,dir_mode=0777,iocharset=utf8,user=,pass=********

//192.168.0.20/share /mnt/mit cifs rw,relatime,vers=1.0,cache=strict,username=guest,domain=MIT,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.0.20,file_mode=0777,dir_mode=0777,nounix,serverino,mapposix,rsize=61440,wsize=65536,actimeo=1 0 0