Re: gratuitous use of echo?

["Ben Eisenbraun" <user=82@nabble.blu.org>]

 On Wed, Feb 27, 2008 at 04:54:31PM -0500, Gordon Marx wrote: 
> On Wed, Feb 27, 2008 at 4:03 PM, Ben Eisenbraun <[hidden email]> wrote: 
> >  I could do this with a temporary file, but I avoid temp files as much as 
> >  possible. 
> 
> Why? 

It's more overhead to use a temp file.  You have to avoid race conditions, 
trap signals in order to do clean up and there's still a chance of leaving 
junk files around if the script is interrupted. 

If you keep it all in memory, then when the process dies, it all just goes 
away. 
  
> Also, going back a couple of posts...where did someone see that 
> backticks were deprecated? I've googled around a little and have found 
> literally zero authoritative sources. 

I googled that as well.  This suggests it's deprecated: 

http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.baseadmn/doc/baseadmndita/korn_shell_comm_sub.htm

But this doesn't: 

http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_06_03

This suggests that backticks are more portable than () command substitution: 

http://docs.hp.com/en/B2355-90046/ch19s04.html

-ben 

-- 
time is the best teacher, but unfortunately it kills all its pupils. 
                                              <hector louis berlioz> 

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