02-16-2012
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All, Prepare a perl script for extracting data from xml file. The xml data look like as
AC StartTime="1227858839" ID="88" ETime="1227858837" DSTFlag="false" Type="2" Duration="303" />
<AS StartTime="1227858849" SigPairs="119 40 98 15 100 32 128 18 131 23 70 39 123 20 120 27 100 17 136 12... (3 Replies)
Discussion started by: allways4u21
3 Replies
2. Shell Programming and Scripting
CTB_KT_OllyotLvos_20081204_164352_200811.txt
CTB_KT_LN_utahfwd_20081204_164352_200811.txt
CTB_KT_LN_utahfwd_Summ_20081204_164352_200811.txt
CTB_KT_PML_astdt_prFr_20081204_210153_200811.txt
CTB_KT_PML_astdt_prOt_20081204_210153_200811.txt
CTB_KT_PML_astdt_Nopr_20081204_210153_200811.txt... (7 Replies)
Discussion started by: w020637
7 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I'm using AWK to try to extract data from multiple files (*.txt). The script should look for a flag that occurs at a specific position in each file and it should return the data to the right of that flag.
I should end up with one line for each file, each containing 3 columns:... (8 Replies)
Discussion started by: Liverpaul09
8 Replies
4. Shell Programming and Scripting
Hi,
Could someone please assist on a quick way of How to extract data from indexed files (ISAM files) maintained in an UNIX(AIX) server.The file data needs to be extracted in flat text file or CSV or excel format .
Usually we have programs in microfocus COBOL to extract data, but would like... (2 Replies)
Discussion started by: devina
2 Replies
5. Shell Programming and Scripting
Hello everyone, I'm new to this forum and i am new as a shell scripter.
my problem is to have html files in a directory and I would like to extract from these some data that lies between two different lines
Here's my situation
<td align="default"> oxidizability (mg / l):
data_to_extract... (6 Replies)
Discussion started by: sbobotex
6 Replies
6. Shell Programming and Scripting
Hi!
I have one file with data that looks like this:
1 data data data data
2 data data data data
3 data data data data
.
.
.
1 data data data data
2 data data data data
3 data data data data
.
.
.
I would like to have awk to write each block to a separate file, like this:
1... (3 Replies)
Discussion started by: LinWin
3 Replies
7. Shell Programming and Scripting
Hi,
I want to make a query about extracting data from two files that both have data ranges.
the data that i want to extract; when there is matching between file1 column 2 is equal to file2 column2 , and file1 column 3 and column 4 is within the range of file2 columns 3 and 4. I would like rows... (1 Reply)
Discussion started by: houkto
1 Replies
8. UNIX for Dummies Questions & Answers
I am trying to extract common list of Organisms from different files
For example I took 3 files and showed expected result. In real I have more than 1000 files. I am aware about the useful use of awk and grep but unaware in depth so need guidance regarding it.
I want to use awk/ grep/ cut/... (7 Replies)
Discussion started by: macmath
7 Replies
9. Shell Programming and Scripting
Hi,
I have directory with multiple files from which i need to extract portion of specif lines and insert it in a new file, the new file will contain a separate columns for each file data.
Example:
I need to extract Value_1 & Value_3 from all files and insert in output file as below:
... (2 Replies)
Discussion started by: belalr
2 Replies
10. Shell Programming and Scripting
Hello,
Using the information in file 1, I would like to extract from file2 all rows which matchs in column 3.
file 1
1233
1230
1231
1232
file2
65733.00 19775.00 1220
65733.00 19793.00 1220
65733.00 19801.00 1220
65733.00 19809.00 1231
65733.00 19817.00 ... (2 Replies)
Discussion started by: jiam912
2 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)