On Mon, Dec 13, 2004 at 03:04:52PM +0000, Hannes Hirzel wrote:
> 
> In a shell scripting language you have control structure, simple 
> variables, sometimes arrays and dictionaries and tests.
> 
> The basic pattern is mostly something like
> 
> command -option1 arg1 -option2 arg2
> theNextCommand arg

You can do this:

  CommandShell new
    if: 'who'
    then: ['the command succeeded']
    else: ['the command failed']

This runs the external program or script, and evaluates one of
two blocks based on exit status of the program. 

Dave