Dear All
I am stuck in one problem. Kindly help me.
I am taking below mention file as input file and want some op file as mention below.
Kindly send me all possible suggestion and query.
Thnaks
Jaydeep
bELOW IS THE INPUT FILE:
*** Connected to BSCANGR ***... (1 Reply)
Hi all, I want to start a new topic on this matter
I have this script,
#!perl
use strict;
use warnings;
use Data::Dumper;
open my $log, '>', 'log-external.txt' or die "Could not open log: $!";
print $log "Subnet,Static,DHCP,Unused\n";
open my $dump, '>', 'dump.log' or die... (2 Replies)
Bit of a weird one i suppose, i want to use an echo inside an echo... For example...
i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos...
echo "echo "hello"" >$file
echo "echo "goodbye"" >$file
... (3 Replies)
Dear all
I had input file as mention below and want op as mention.
Kindly let me knw possible ways.
Regards
Jaydeep
INPUT:
RXOTX-48-1
2A 34
2B 35
RXOTX-499-2
2C 32
RXOTX-4-1
2D 23
OUTPUT: (3 Replies)
Hello Team i have a file with following data (as columns).
I need implement a syntax like below for altering table
ALTER TABLE1 TABLENAME
ADD COLUMN COL1 CHAR(5) NOT NULL WITH DEFAULT
ADD COLUMN COL2 CHAR(5)
..
..
ADD COLUMN COLn CHAR(5) NOT NULL... (1 Reply)
Hi I am a newbie here. I tried searching for the solution but I guess I either didn't find it or there hasn't been one posted.
my problem is I spooled the results of a query into a .txt file. When I cat the file the formating looks great. All the columns are aligned. However once I mailx the... (2 Replies)
Hi,
I have a data as follows in some files, i want to change CHAR(2-20) to VARCHAR(2-20). I should not touch any line with CHAR(1)
Example:
Input:
cur_rev_stage_cd CHAR(5) CHARACTER SET LATIN NOT CASESPECIFIC NOT NULL,
prev_rev_stage_cd CHAR(5) CHARACTER SET LATIN NOT... (7 Replies)
I need to create a fixed width file based on the column lengths.
lets assume I have six(this may be dynamic) fields each are of different length
column1=6 #size of the column
column2=3
column3=2
column4=3
column5=4
column6=5
I tried below code snippet but it is not working
echo... (4 Replies)
Discussion started by: gvkumar25
4 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)