Hi, guys. I have one question:
I need to search for a string in a file, and then extract another string from the file and assign it to a variable.
For example:
the contents of the file (group) is below:
...
ftp:x:23:
mail:x:34
...
testing:x:2001
sales:x:2002
development:x:2003
...... (6 Replies)
I have a file where a line has the following form:
n0=7.00 !Central density
and I want to extract the value 7.00. I used to do this with the order below, which finds the string "n0" and take the rest of the line parting from the separator "=", but the comment "Central density..."... (7 Replies)
Hi,
This is the first time playing around with perl and need some help.
Assuming if i have a line of text that looks like this:
Date/Time=Nov 18 17:12:11;Device Name=192.168.1.1;Device IP=192.168.1.1;Device Class=IDS;Source IP=155.212.212.111;Source Name=UNKNOWN;Source Port=1679... (3 Replies)
Below are the content of my file and i need to extract the 6 digit numbers after the word barcode, how can i do this?
for example i need to extract 004119,004275,004030 to a new file.
Logically move media ID 004119 (barcode 004119) from standalone to slot 18.
Logically move media ID 004275... (9 Replies)
Hi,
I have a file which has thousand of lines with lines starting with
And I want to extract and show to user only the below string from all the lines
Please note note that the above string is a time stamp and it would be different on all the lines.
Please tell me how to extract... (8 Replies)
Hi,
May i ask if someone share some command for extracting a string between 2 ref string in a txt file
My objective: i had a file with multiple lines and wants only to extract the string "watch?v=IbkAXOmEHpY" or "watch?v=<11 random character>", when i used "grep 'watch?=*' i got a results per... (4 Replies)
Hi,
Here is my question,
I need to extract string between two underscores from the filename
for example, filename is
atmos_8xdaily_instant_300x300_1_12.nc
what I want to extract is 300x300.
There are many such files in my directory, so I guess the code should be like:
for file... (7 Replies)
Hi,
I have a file whose contents are as follows.
2013-03-08/15:09:20.134 INFO 00000000-00000000 0034 09700400 CON_IN SessionID:ED5E1400-4805-85E2-17B2-5BE45684886A Connection
ID:ED5E1400-4805-68F1-BB1D-F06496BCF910 TO:<sip:51234999@10.239.94.146:5060 FROM:<sip:9302280716@97.208.31.7:51024... (2 Replies)
Hi i am having a logfile which contain lot of entires, but i need extract a word after if i found a line that contains a particular string as "ENROLLMENT_EXCEPTION - Exception". please help me in getting a script to do this.
Regards
C. Suresh (5 Replies)
Discussion started by: sumeeva1907
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)