just another question

[David A. Bandel]

On Thu, Apr 23, 2009 at 3:33 PM, vu pham <vu at sivell.com> wrote:
> Is there any difference between using a=$(command) and  a=`command` ?

eval uname -r
(although you can't do a=eval uname -r)
most texts will tell you your first example is the best.  It's easier
to read and understand.

Which it better:  test or [ ] ?

in most systems, [ and test are links.  test is easier to understand,
and there's less confusion that you won't forget the required ] or
white space to separate [ from the expression you're testing.

>
> I tried a simple example of kver=$(uname -r) and kver=`uname -r` and found
> they are the same but I am not sure if there is something that I do not
> know.



David A. Bandel
-- 
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