Re: Rotating logs (and keeping the log's tail)

[Sjoerd Hardeman <sjoerd@lorentz.leidenuniv.nl>]

Frank Lin PIAT wrote:
> Hello,
>
> I use a wiki engine that produces an event log, which I want to rotate.
>
> Because the event-log is used to display the "PageHits", I don't want to
> truncate the log every Monday. I wish the log could contain the last
> week, plus the current week, so the statistics are never empty.
>
> The scenario would be:
>
> On The 2nd Monday: store the last line of the log (i.e "tag" it)
>
> On the next Mondays: 
>  * Save the top of the file (above the tag)
>  * Delete the top of the current log.
>  * Update the tag (to the bottom of the log file).
Can't you just write a script that updates the tag to a separate file, 
and use logrotate to do the normal logrotation? So something like
'cat /var/log/wiki.log | grep tag > /var/log/tag.log'
and in /etc/logrotate.d/ you create a rule for wiki.log (or whatever the 
log files are named.
Or did I just not understand what you want?

Sjoerd

> Franklin
>
> [Please CC me, I am not subscribed to this list]

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