Hi All,
I have an input below. If the term in the 1st column is equal, print the last row which 1st column is equal.In the below example, it's " 0001 k= 27 " and " 0004 k= 6 " (depicted in bold). Those terms in 1st column which are not repetitive are to be printed as well. Can any body help me... (9 Replies)
Hi,
I want to get script or command in Sun Unix which matches first fields of both the files and print the feilds of one files, example may make it more clear.
InputFile1
==================
Alex,1,fgh
Menthos,45454,toto
Gothica,855,ee
Zenie4,77,gg
Salvatore,66,oo
Dhin,1234,papapa... (3 Replies)
Hi All,
I have to match each row in file 1 with 1st row in file 2 and print the corresponding column from file2. I am trying to use an awk script to do this. For example
cat File1
X1
X3
X4
cat File2
ID X1 X2 X3 X4
A 1 6 2 1
B 2 7 3 3
C 3 8 4 1
D 4 9 1 1 (3 Replies)
Hi all
I have another question as of now.
I have two files
One file contain
data like this
Serendipity
glamerus
Shenpurity
In another file these entries are present in different columns like this from 2 column onwards
SRN Serendipity Non serendipity ... (1 Reply)
Here is my file:
700 7912345678910
61234567891234567891
700 8012345678910
61234567891234567891
I want to pull all lines that begin with '700' only if columns 11-12 are '79'.
My code so far only pulls the '79', not the whole line:
grep ^700 file1 | cut -c 11,12 |... (7 Replies)
Hello,
I have two files which are of the following format
File 1 which has two columns
Protein_ID Substitution
NP_997239 T53R
NP_060668 V267M
NP_058515 P856A
NP_001206 T55M
NP_006601 D371Y ... (2 Replies)
Hello,
i need help with awk.
I have this file:
cat number
DirB port 67 er_enc_out 0 er_bad_os 0
DirB port 71 er_enc_out 56 er_bad_os 0
DirB port 74 er_enc_out 0 er_bad_os 0
DirB port 75 ... (4 Replies)
In the awk below I am trying to match the value in $4 of file1 with the split value from $4 in file2. I store the value of $4 in file1 in A and the split value (using the _ for the split) in array. I then strore the value in $2 as min, the value in $3 as max, and the value in $1 as chr.
If A is... (6 Replies)
Discussion started by: cmccabe
6 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)