Hi ,
I am required to view the fixed postion file very often . I am looking for the utility like this
if the file has a one or multile line
abcdefghijklmnopqr
Utility should make my file look like this
12345678910111213141516--------------------------
abcdefghijk l m n o p q r ... (4 Replies)
Hi,
I have following format in file aaa with content below, and would like to seek help from forumer about how to change and swap the position on 2nd field.
5874957|901125|
95874960|650614|
95874966|870308|
901125 to be changed as 25-11-1990 for eg
Can someone help please ?? :)
... (6 Replies)
Hello everybody,
I have a file like this : "window 1 truck 3 duck 2... fire 1... etc..." and I would like to print the following number of a word I am searching for. (For example here, if I search for the word "fire", I will print "1")
Thank you for your help ! (7 Replies)
Hi.
If I have files with names like abcd.20080625.1234.abc.XYZ abcd.20080625.1234.abc.XYZW
how can I get the XYZ or XYZW part? is there something like an Index() function but in reverse order?
I was thinking that if I can get the position of the last dot... (7 Replies)
Hi All,
Can anyone help me please,
I have a word like below.
6,76
I want to read this word and check if it has "," (comma) and if yes then i want to replace it with "." (dot). That means i want to be changed to 6.76
If the word doesnot contain "," then its should not be changed.
Eg.
... (6 Replies)
hi ,
i am having a file
Full_ARTMAS_20110510152425.xml in my local directory. i wanted to extract the character at the 35143546 th position at line 1 of this file.Can any body help me how to do it???
regards
Anjali (2 Replies)
i want to find the position of a character in a line , the first position, last, 5th occurence position , i ve tried grep -n , and expr index but they dont fit the bill. Please let me know if there is any other alternative (2 Replies)
Hi,
i want find the character '-' in a file from position 284-298, if it occurs i need to replace it with 'O ' for the position in the file. How to do that using SED command.
thanks in advance,
Sara (9 Replies)
I am trying to find/grep the 5th and 6th position character (TX) of a word in a file. I tried to do
grep "....TX" file
The output gives me everything in the file with TX in it. I only need the output with the TX in the 5th and 6th position of the word. Any idea
Example:
test1 car... (5 Replies)
I will appreciate if you help me here in this script in Solaris Enviroment.
Scenario:
i have 2 files :
1) /tmp/TRANSACTIONS_DAILY_20180730.txt:
201807300000000004
201807300000000005
201807300000000006
201807300000000007
201807300000000008
2)... (10 Replies)
Discussion started by: teokon90
10 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)