[ILUG] what does this shell script mean

[hrishy samant]

hey thanks buddy can you also if possible tell me what
is getopts all about.
--- Vincent Cunniffe <vincent at cunniffe.net> wrote: >
hrishy samant wrote:
> 
> > hello 
> > 
> > could anybody explain me this shell script
>  
> <schip>
> 
> 
> > can anybody explain what this &&set_level 1 means
> 
> 
> It's a logical AND statement, used as a trick to run
> a subsequent 
> command *only* if the first command returned a
> 'success' value.
> 
> The evaluation of the expression (X && Y) is false
> if either X *or* Y 
> are false, so Y will not even be evaluated if X is
> found false.
> 
> This is fairly commonly used, in commands such as :
> 
> 	make && make install
> 
> which will only run the second installation command
> if the compilation 
> stage is found to have worked.
> 
> Regards,
> 
> Vin
> 
> 
> -- 
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