I have to capture the creation date and time stamp for a file. The ls command doesn't list all the required information. I need year, month, day, hour, minute and second.
Any ideas... (1 Reply)
I'm trying to write a script that checks the DTS of a file the compares it to the current time. If greater that 60 mins has gone by and the file has not been written to alert.
So far I have the time pulled from the file but I dont know how to compare the times against a 60 min difference.
... (2 Replies)
I have a directory with following files in it
ABC.000.DAT
ABC.001.DAT
ABC.002.DAT
ABC.003.DAT
I want to insert time and date stamp in file names like
ABC.000.YYYYMMDDHHMM.DAT
I able to insert the time and date stamp at the end of filename
Kindly help (1 Reply)
Hi All,
Wondering if there is have a date added at the end of a test string. I have a hypothetical text file day one:
John
Paul
George
When the file day one is output, I'd like it to read something like this:
John 101406
Paul 101406
George 101406
Day two, when the same text file... (0 Replies)
Hi,
We are using RSYNC for syncing remote directories and working great. Our requirement is to have the destination files with date/time stamp of when they're copied on to the destination server, NOT the date/time stamps of source files/directories.
As RSYNC, by default, preserving the same... (4 Replies)
I have searched several thread and not found my solution, so I am posting a new qustion.
I have a very simple script on an AIX server that FTPs 2 files to a MS FTP server. These 2 files are created on the AIX server every hour, with a static name.
I need to FTP the files to the MS server, but... (1 Reply)
Hi
When i do ls -ltr <file1> then it shows me the date and time of the file
if - for whatever reason file has future date/time stamp then ls -ltr is not showing the time, it just shows only date part ... even if time is ahead by 2 hr than current time.
suppose a file was copied from INDIA... (3 Replies)
Hi
I use "touch -t xxxxxxxx" command to set date/time stamp of a file. My requirement is to read the date/time stamp of a file and apply it to another file.
Is there anyway to do it simple instead of manually taking date/stamp of first file?
TIA
Prvn (2 Replies)
Hi Folks,
Need a clarification on files with date and time stamp.
Here is my requirement. There is a file created everyday with the following format "file.txt.YYYYMMDDHHMMSS".
Now i need to check for this file and if it is available then i need to do some task to the file.
I tried... (6 Replies)
Help with Perl script :
I have a web.xml file with a line
<display-name>some_text_here</display-name>
Need to append the current date and time stamp to the string and save the XML file
Something like
<display-name>some_text_here._01_23_2014_03_56_33</display-name>
-->Finally want... (5 Replies)
Discussion started by: gaurav99
5 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)