It would be very useful to be able to pass shell commands on the smbsh command 
line.  This has two main advantages:

1) No need to enter an interactive smbsh shell to execute scripts which access 
windows files
2) Possible to run cron jobs which access windows files

and a neat side-effect:  You can create shebang scripts which use the smbsh 
facilities. e.g. trite example:

#! /usr/local/samba/bin/smbsh -Uuser%password --
ls -l /smb

or semi-interactive

$ smbsh -- -c "ls -l /smb"
Username: julian
Password: 

total 0
dr-xr-xr-x   2 cmsdev   cmsdev         0 Jan  1  1970 KPGB
dr-xr-xr-x   2 cmsdev   cmsdev         0 Jan  1  1970 PACEGB

The attachment contains the proposed code which works for Solaris and I suspect 
is trivial enough to work for any *nix.