[CentOS] bash - safely pass untrusted strings?

[Benjamin Smith]

On Tuesday 26 February 2008, Bob Beers wrote:
> short answer:  single quotes will handle all characters, except single 
quotes.
> 
> long answer:  man bash
>  the section called QUOTING may help you figure a solution.

I've read the man page. It helps if I already know the input - I don't have a 
problem with manually putting slashes in front of spaces and single quotes. 
But in this case, I don't know the input. It's untrusted data. 

There is no mechanism for escaping untrusted input?

-Ben
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