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Date: Sat, 02 Aug 2014 04:26:38 +0200
From: Volker Armin Hemmann <volkerarmin@googlemail.com>
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Subject: Re: [gentoo-user] a question about emerge --sync
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Am 01.08.2014 16:30, schrieb behrouz khosravi:
> Hello everybody.
> I have a little bandwidth problem. I don't want to update my packages
> very frequently.
> Is it save to sync my portage not very often, say every month or two,
> so when I install something I wont be warned that some of my packages
> are outdated?
> In this manner I wont need to mask my packages, to prevent them from
> updating, right ?
>
> Thanks.
>
> .
>
the longer you wait, the more problems you will have.


So sync often.

Installing the actual updates? On a weekly basis is a good rule of thumb.

And don't use --pretend, use --ask. Portage has become slow as f....
over time. You don't want to waste time to let it do the same twice.

Also: read the manual. You obviously haven't - or did not understand
everything you read, so read again. For your own safety.