Hi there,
I'm wanting to produce a shell script that will check through some file names and identify a skip in sequence (four digit seq num in file name).
I have played on the idea of havng a file that has a sorted list of file names which I can read line at a time and cut out the sequence... (1 Reply)
Hi,
I have a data as follow:
1 400
2 239
3 871
4 219
5 543
6 ...
7 ...
.. ...
.. ...
99 818
100 991
I want to replace the sequence number (column 1) that start from 150. The output should like this:
150 400
151 239 (3 Replies)
Hi,
I have a string like:
DBMS stats (Number Used | Percentage of total): 10 | 1.00%
I have a sed command to extract numbers from this string:
sed "s///g;s/^$/-1/;"
Output: 10100
However what I want the sed command to return is only the first number(regardless of its size) i.e.... (3 Replies)
Dear Perl users,
I need your help to solve my problem below.
I want to print the sequence number without missing number within the range.
E.g. my sequence number :
1 2 3 4 5 6 7 8 11 12 13 14
my desired output:
1 -8 , 11-14
my code below but still problem with the result:
1 - 14
1 -... (2 Replies)
Hi Unix Gurus,
I have a requirement to create a filename in the following format:
file.out_1_mmddyyyyhhmiss (0 to 3 hrs)
file.out_2_mmddyyyyhhmiss (4 to 7 hrs)
file.out_3_mmddyyyyhhmiss (8 to 11 hrs)
I tried,
1)touch file.out_`date '+%m%d%Y%H%M%S'`
2)expr `date +%H` / 4 + 1
... (2 Replies)
Am using unix aix KSH...
I have the files called
MMRR0106.DAT
MMRR0206.DAT
MMRR0406.DAT
MMRR0506.DAT
MMRR0806.DAT
....
...
MMRR3006.DAT
MMRR0207.DAT
These files are in one dircetory /venky ?
I want the output like this ?
Missing files are :
MMRR0306.DAT
MMRR0606.DAT... (7 Replies)
Hi all,
I have a file like this
ID 3BP5L_HUMAN Reviewed; 393 AA.
AC Q7L8J4; Q96FI5; Q9BQH8; Q9C0E3;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 05-SEP-2012, entry version 71.
FT COILED 59 140 ... (1 Reply)
Hi All ,
I have a file which contains data(comma separated) in below format :
500,Sourav ,kolkata ,8745775020,700091
505,ram,delhi ,9875645874,600032
510 ,madhu ,mumbai ,5698756430 ,500042
515 ,ramesh ,blore ,8769045601 ,400092
I want to add unique sequence number at the start of each... (7 Replies)
Hi,
I have a file source as below.
OL|10031|Day|Black|Midi|Good|Value|P01|P07
OL|10031|Day|Black|Short|Good|Value|P01|P07
I need to create a file form the above data as below logic
1. take the first line
2. create a file say inclusion1 as below from the first line
OL,10031,1,Day... (8 Replies)
Discussion started by: bhaski2012
8 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)