Bash Quirkiness

[David Cary Hart]

On Mon, 2004-07-26 at 11:08, Robert P. J. Day wrote:

> it's short for "command substitution", which runs the command 
> contained with the ` quotes and produces what's printed to standard 
> output.  *very* different from the regular single quotes -- you *bet* 
> they're not interchangeable.
> 
> to avoid confusion, you can also identify command substitution with 
> the syntax $(... command ...), which i personally prefer, since it's 
> much clearer.  that is, you'd be better off writing:
> 
>       c=$(expr ... ')
> 
> at least, in my opinion.
> 
Outstanding. Thank you very much.