sysinstall and bsdlabel/boot

Chuck Swiger cswiger at mac.com
Tue Jan 15 10:20:23 PST 2008


On Jan 15, 2008, at 10:08 AM, Nikola Lečić wrote:
>> P.S.  I hope I'm doing the quoting thing ``properly'', not
>> "incorrectly".
>
> IMHO there is neither FreeBSD- nor Linux-specific mails, and there
> shouldn't be such thing. These mails are written in English, so it
> seems that neither of us is right: quotes should be “like this”,  
> not
> "like this" or ``like this''.

While I would agree with the above, Unix shells make a distinction  
between different types of quote characters, and if you are talking  
about command-line programming or scripts, there is an advantage to  
quoting things in a fashion that the shell will be happy with.

Double-quotes (") permit variable, history, and alias expansion of the  
quoted terms, whereas single forward quotes (') give you a string  
literal and disable expansion.  Backquotes (`) are used to perform  
command substitution and are a synonym for "$(command)" syntax;  
something like "echo `ls`" would be a simple example.

Regards,
-- 
-Chuck



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