Hi
I have this code, and i want work with a ls -shalR output in .txt
What i need read to do this??
Where start?
#!/usr/bin/perl
# Allrights- A perl tool for making backups of file permissions
# Copyright (C) 2005 Norbert Klein <norbert@acodedb.com>
# This program is free... (1 Reply)
Could anybody tell me how I can use sed to modify lines following specific lines? the file is as following:
"TEST/SI1573.lab"
3670 8920 h#
8920 9530 hh
9530 10694 ih
.
"TEST/DR1/FAKS0/SI2203.lab"
9730 9580 h#
9580 9840 dh
9840 10652 ix
10652 11997 r
........
I want to modify the... (5 Replies)
Hi Gurus,
I need some help with the "grep" command or whatever command that you think suitable for me. I'm about to write a perl script to extract a report from the system and submit it to the end users. The input for the script will consist of 3 element.
1) Generation ID
2) Month
3) Year... (6 Replies)
Dear Friends,
I am beginner in Perl and trying to find the problem in a script. Kindly help me to modify the script. My script is not giving the output for the last field and followed text (LA: Language English). Input file & script as follows:
Input file:
Thu Mar 19 2:34:14 EDT 2009
STC... (3 Replies)
Hello all !I have two sets of folders that have IP address from two sources.The below perl script I was working with needs some corrections.I am looking for the perl script to identify and count what IP address are found to be duplicated between both files.The format from both files are the same... (4 Replies)
Hello,
I'm a newbie to the world of programming and so i decided to take up perl. I'm trying to learn how to modify the script below in order to have it sent with attachments. Any suggestions?
#!/usr/bin/perl -w
use strict;
use warnings;
my $from = 'xxx@domain.com';
my $to =... (0 Replies)
Hello,
I am trying to convert lines from text file, I got lines in text files like that
ALPHA.cab
tomtom.cab
vgame.cab
converter.cabWhat i want to do is I want to conver these lines like that,
cabwiz.exe ALPHA.cab extract "C:\1extract\ALPHA"
cabwiz.exe tomtom.cab extract ... (5 Replies)
I have file like this:
rs111 A T 0.9 0.8 ...
rs112 AT T 0.8 0.2 ...
rs113 G CT 0.9 0.1...
I wish to replace all the NONE "A" or "T" or "G" or "C" values in column 3 and column 4 to " ", how can I do this?
thanks! (8 Replies)
Hi Friends,
I want to convert a csv file into a ordinary .txt file. I am able to convert but I want the output to look as shown below in the .txt file
table findhost=
{
{"xyz","abc"},
{"rxz","mmz"},
{"vrr","nnz"},
}
default={"NONE"}
My current perl script
#!/usr/bin/env perl... (12 Replies)
Discussion started by: dbashyam
12 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)