Re: How to tar a file while it's chaging

[Tony Nelson <tonynelson@georgeanelson.com>]

On 09-12-18 14:17:54, Olaf Reitmaier Veracierta wrote:
> Hi,
> 
> In a backup shell script I tar a file but sometimes it's chaging
> because is a log file (plain/text).
> 
> While taring a get this error (warning) message:
> 
> /bin/tar: /var/log/postgresql/postgresql-8.1-main.log: file changed 
> as we read it
> 
> The command return with a non-zero value (an error) but I can't found
> tar return codes in man.
 ...

See `info tar` node Synopsis for the exit codes.  "1" means "some files 
differ" and you can just ignore it in your script.  Such files will 
likely get backed up completely next time.

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