Hi Guys,
What is the most effecient way to compare the content of 2 seperate files and extract the result of there is a match? We have 2 separate log files and we are trying to find the common errors from the 2 files.
Thanks,
Odogbolu98
:( (3 Replies)
Hello all:
I'm new in Unix and here and I'am spanish so my english isn't so good to explain my doubt. Here it is.
Very urgent:
I need to compare the value of a variable with a string.
Example is this.
Imagine that the variable x1 contains the path and a file text and I need to compare... (2 Replies)
Hi folks
I have some logfiles like this:
./2009_08_22_14_08_entire_backup_no_1.log
.
.
.
./2009_08_22_14_34_entire_backup_no_14.log
each one contains a timestamp from "date +'%s'"
now i need function which finds the logfile with the greatest number in it and returns (echos) the... (7 Replies)
Hello,
How to search in directory by comparing some string with the content of
directory.
Ex:
I want to compare abhi string with the content of backup directory.
i.e want to check that is there any file in backup directory having name
... (3 Replies)
Hi
have an array like this
colarray="a"
colarray="b"
colarray="c"
colarray="d"
colarray="e"
colarray="f"
the arrayvariable is in unix sh file
i want to check the content of the array to oracle database table.
that is whether "a" is present in the table. (4 Replies)
I have two files,
sec.txt(1st File)
3172
disp.txt(2nd file)
the file name is
***********
45676
Now i want to compare the value in sec.txt file with disp.txt file
Excatly i want to compare the value 3172 in first file and 45676 in second file.
i want to compare the first line of... (11 Replies)
Hi,
I created a skript in ksh which generate a file with semicolon as separator, this is an example of the file a created:
example content file:
hello;AAAA;2014-08-17
hello;BBBB;2014-08-17
hello;CCCC;2014-08-17
I would need to compare the content in of the second column of this file... (3 Replies)
Hi,
I am having two folders where i need to compare the content of files and also to know if any new files been added and redirect the difference output in respective filename logs. For e.g.:
Directory D1:
f1
f2
f3
Directory D2:
f1
f2
f3
f4
i Need to compare the directories... (25 Replies)
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)