Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
I use rsync snapshots for backups on my workstation. Every 15 minutes during the workday. Eventually the partition where I'm keeping my snapshots will fill up. Rather than just blindly deleting the oldest snapshots... I thought a better solution might be to following:

1. Convert the snapshot dir's datetime name to epoch
2. In the trip script apply the epochs to a parabolic function: y = x^2
3. Delete snapshot dirs which don't conform to the parabolic function... until the partition is ~70%

The majority of this script is simple enough... but I'm struggling with the parabolic function part. Can someone offer help or advise?


In reply to Curve fitting for rsync snapshot deletion by mhearse

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    [Discipulus]: if known where i can read about the matter?
    [choroba]: he's not really sick, we just got nobody to look after him today
    [Discipulus]: create an account for him; we are funny baby sitters ;=) come here child, want to listen the typeglob tale?
    [vrk]: choroba Oh, that's good.
    [vrk]: Discipulus I don't know much about prime numbers, but wouldn't that kind of an answer be in a graduate-level number theory book?
    [Discipulus]: my 8 yo daughter has two weeks of sleep disturbs.. we are gonna be crazy..

    How do I use this? | Other CB clients
    Other Users?
    Others chilling in the Monastery: (3)
    As of 2017-04-27 08:01 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      I'm a fool:











      Results (501 votes). Check out past polls.