Bash tip

[William Park]

On Sat, Mar 27, 2004 at 05:59:15PM -0500, James Knott wrote:
> I have discovered a simple method for conditionally running a command, 
> depending on if a file exists.
> 
> When you want to run a command, when a file exists, the usual form has 
> been something along the lines of:
> 
> if [ -x aaa ]; then
>   bbb
> fi
> 
> However, I've noticed that you can also use
> 
> ls aaa && bbb

This is equivalent to
    [ -e aaa ] && bbb
A better analogy is
    [ -x aaa ] && bbb

-- 
William Park, Open Geometry Consulting, <opengeometry-FFYn/CNdgSA at public.gmane.org>
Linux solution for data processing and document management.
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