Date utility collection dateutils, can handle situations like this. Here's a demonstration, but note that this version of dconv will fail on some 2-digit year data. This is an issue with Debian being behind, the author has added an option to handle many 2-digit years correctly.
producing:
I hesitated to post code that doesn't work correctly with the user data, but the usefulness of the dateutils collection is appropriate, especially because the issue can be resolved with a more recent version than I have at my disposal.
I would like to know how I could get a yesterday date in yyyymmdd e.g. today is 20011109, and I would like to get 20011108. Thank you!:confused: (2 Replies)
Hi
i need to convert a date in the format DD-Mon-YY to YYYYDDMM
Ex : 01-JUL-00 to 20000701
Can anybdy help me with this??
Thanks in advance
Shenaz (5 Replies)
I have a file with some date columns in MM/DD/YYYY format:
SMPBR|DUP-DO NOT USE|NEW YORK||16105|BA5270715|6/6/2007 |MWERNER|109||||JOHN||SMITH|MD|72211118||||||74559|21 WILMINGTON RD||D|11/6/2003|SL# MD CONTACT-LIZ RICHARDS|||0|Y|N||1411458|
And I want to convert the date format to:
... (5 Replies)
Hi,
I have a log file that contains information along the lines of the following:
=========
jobnumber 322761
start_time Tue May 19 19:42:37 2009
end_time Tue May 19 20:11:28 2009
failed 0
=========
jobnumber 322762
start_time Tue May 19 19:39:51 2009
end_time ... (4 Replies)
Hi All,
We are copying all the files into ARCHIVE directory after we process them. We are doing this process from last 2 years, now we have a lot of files in ARCHIVE directory.
Now I need to find when the first file is copied into this directory?
If I Issue,
ls -l /ARCHIVE/*.* | tail -1... (3 Replies)
I have the following perl one-liner to get yesterday's date, but I would like it in the form of dd-MMM-yy (for example: 01-JAN-12). Can someone alter the below code so I get the format I want? Also, could someone also give me a line for dd-Mmm-yy (for example 01-Jan-12)?
Code:
YEST=`perl -w... (3 Replies)
My requirement is:- there will be files at a location each day with the date format DDMMYYYY.
Novawise_Activity_Call_Notes_04022013.txt
Novawise_Activity_Inbound_04022013.txt
Novawise_Activity_Inbound_05022013.txt
Novawise_Activity_Call_Notes_05022013.txt... (8 Replies)
Discussion started by: djrulz123
8 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)