> On 15 Mar 2019, at 05:21 , Graham Percival <[email protected]> wrote: > > On Thu, Mar 14, 2019 at 05:39:42PM +0200, hvjunk wrote: >>> On 14 Mar 2019, at 17:27 , Craig Hartnett >>> <[email protected]> wrote: >>> >>> I've skimmed the sources of some of the "helper scripts" that offer >>> archive rotation (and, of course, done a web search), but I can't seem >>> to figure out how to use wildcards to delete Tarsnap archives. > > See below. :) > >> Pull the whole list of archives, then grep for those you want, and do a >> multiple delete action: Beware, it could take easily an hour for large >> number of archives (In my case dailies) where I delete and leave >> weeklies/monthlies every 3-6months. > > Yes, although I'd use a different "multiple delete action". > >> The “juice” part I use is GNU parallel which gets fed the list of archives >> (on the STDIN), one per line, ie: >> >> cat LIST-TO-DELETE | parallel -j1 -X time tarsnap -v -v -v -d --keep-going >> -f{} > > This is the first time I've looked into GNU parallel, but if you > use it with -j1, surely it has no real effect?
The -j1 is like xargs’s “default”, ie. no parallel execution. The reason for parallel and not xargs, is/was the -f <archive_name> repetition, as I’ve stated at the bottom of that email "else you’ll have multiple tarsnaps competing and I recall the one working while the others exit with error” > Here's my solution, using the --archive-names option (new in > 1.0.38, 2018-July-15, so longtime users might not know it exists). Ah!, thanks for reminding my about that one!
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