Re: Capturing STDERR in ksh.

[Matthew Miller <mattdm mattdm org>]

On Fri, Jul 27, 2001 at 04:12:50PM +0100, William Lupton wrote:
> Paul Sullivan wrote: 
> > i.e. rpm --checksig example.rpm 2>&1 >/dev/null
> The re-directions are processed in order; put "2>&1" last

This seemed non-intuitive to me at first; the first line above seemed "in
order" to me: as I naturally read it, it says:

 1. combine standard error into standard output
 2. send standard output (including standard error) to /dev/null

Obviously, that ain't right. It actually says:

 1. send standard error to wherever standard out is going now (the terminal)
 2. send standard out to /dev/null

So, what's wanted is:

 1. send standard out to /dev/null
 2. send standard error to wherever standard out is going now (/dev/null)

Which is:

 rpm --checksig example.rpm >/dev/null 2>&1


Hope that helps. :)

-- 
Matthew Miller           mattdm@mattdm.org        <http://www.mattdm.org/>
Boston University Linux      ------>                <http://linux.bu.edu/>