redirecting out of a command invoked by sudo fails

[JD]

On 06/25/2010 12:04 PM, Bill Crawford was caught red-handed while writing::
> On 25 June 2010 19:38, JD<jd1008 at gmail.com>  wrote:
>    
>> cd /var/lib
>> sudo tar cjf - rpm>  rpm.tar.bz2
>> sh: rpm.tar.bz2: cannot create [Permission denied]
>>
>> My username is in /etc/sudoers:
>> jd      ALL=(ALL)       NOPASSWD: ALL
>>
>> Yeah... I know it is not safe to set NOPASSWD and all that...
>> but that is not why I am asking about.
>>
>> Is this an established legacy behaviour of sudo?
>>      
> Nope. Just that sudo only runs the "tar" command; the redirect (>) is
> done by the shell, and since you aren't root, you can't write in
> /var/lib.
>
> Suggest "sudo tar cjf rpm.tar.bz2 rpm" (have tar write the file
> itself; it will be running as root so will work).
>    
Makes sense! Thanks for the head up.