On 05/27/2010 02:30 PM, daimh wrote:
> Hi,
> 
> 	
> 	echo -e "3\n\n0"|sort -un

'echo -e' is inherently non-portable; you should get in the habit of
using printf(1) instead.

> 
> 
> 	0 is missing from output, is this a possible bug?

Thanks for the report.  However, I don't think it is a bug.  The empty
line, when forced to take on a numeric value, is equivalent to 0.  And
since you specified unique entries only, sort only printed the empty
line (the first of the two matching lines that it encountered).

-- 
Eric Blake   eblake@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org