Re: [Help-bash] Which is preferred? '`' or '$('?

[Dan Douglas]

On Monday, March 11, 2013 07:59:24 PM Peng Yu wrote:
> Hi,
> 
> It seems that $( is a more recent form as it is mentioned in the
> manual "When the old-style backquote form of substitution is used
> ...". Since these two forms, to a certain extend, are the same and $(
> is introduced later, is $( preferred?
>

We have an FAQ here: http://mywiki.wooledge.org/BashFAQ/082

The only complications with $() are minor. A few shells have issues parsing 
case..esac out of them unless the parentheses are all paired. Bash < 4.3 has 
an issue with brace expansions not nesting within them with certain quoting 
patterns.

Basically only use backticks for old Bourne shells.
-- 
Dan Douglas