[CentOS] Another Tar stopper

[Robert Moskowitz]

Will McDonald wrote:
> On 12/09/06, Robert Moskowitz <rgm at htt-consult.com> wrote:
>> Will McDonald wrote:
>> > On 12/09/06, Ralph Angenendt <ra+centos at br-online.de> wrote:
>> >> Will McDonald wrote:
>> >> > I'd send STDOUT and STDERR to separate logs for brevity's sake.
>> >> > Something like...
>> >> >
>> >> > tar czvf $destfile $tobetarred > /tmp/tarlog.std 2> /tmp/tarlog.err
>> >>
>> >> If you want to have it brief - why the "v"?
>> >
>> > Pedant. :)
>> >
>> > What I *meant* was then all the errors would be in one place, all the
>> > standard messages in an other, which is kinda brevity.
>> OK.  I used the following:
>>
>>
>> tar -cpvzO / --exclude-from=/home/not-file 2>/tmp/tarlog.err | ssh
>> user at ipaddrs "cat > backup.tgz"
>>
>>
>> No messages went to the screen.  tarlog.err is 4Mb large.  Looked at it
>> for error messages.
>>
>> NONE!  not even the one I was getting before routing stderr.out.  I did
>> a the -l option, but that should not result in no error messages...
>>
>> So now what?
>>
>> Confused.
>
> It appears when you tar to STDOUT it redirects the usual STDOUT
> messages to STDERR, in addition to the errors, so I guess a separate
> error log when tar-ing to STDOUT's out.
>
> [wmcdonald at stella /]$ tar cpvzO /proc/ 1> /tmp/proc.stdout 
> 2>/tmp/proc.stderr
> [wmcdonald at stella /]$ file /tmp/proc.*
> /tmp/proc.stderr: ASCII text
> /tmp/proc.stdout: gzip compressed data, from Unix
> [wmcdonald at stella /]$
ah, will try this tomorrow.
> Dropping the 'O' option and using - behaves the same...
Is there an advantage of one over the other?  Origin note I found had 
the '-' and I changed it to 'O'
>
> [wmcdonald at stella /]$ tar cpvz - /proc/ 1> /tmp/proc.stdout 
> 2>/tmp/proc.stderr
> [wmcdonald at stella /]$ file /tmp/proc.*
> /tmp/proc.stderr: ASCII text
> /tmp/proc.stdout: gzip compressed data, from Unix
>
> Will.
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