02-10-2014
What have you tried so far?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
I have a got a problem ..
I have t files as below:
1.txt contains
-----
-----
-----
column 1, "cat",
column 24, "dog",
column 100, "rat",
-----
-----
-----
2.sh should contain
-----
-----
-----
awk 'BEGIN { printf ("%1s","cat")}' (19 Replies)
Discussion started by: jisha
19 Replies
2. Shell Programming and Scripting
Hi,
I need to append the data in to a file by using tab delimiter.
eg:
echo "Data1" >> filename.txt
echo "\t" >> filename.txt (its not working)
echo "Data2" >> filename.txt.
the result sould be like this.
Data1 Data2 (6 Replies)
Discussion started by: Sharmila_P
6 Replies
3. Shell Programming and Scripting
Input
Participant number: HAC
Position type Location Distance_start Distance_end Range Mark
1 1 + Front 808 1083 276
2 1 + Front 1373 1636 264
3 1 - Back 1837 2047 211
Participant number: BCD
Position type... (6 Replies)
Discussion started by: patrick87
6 Replies
4. UNIX for Dummies Questions & Answers
hiii, Help me out..i have a huge set of data stored in a file.This file has has 2 columns which is latitude & longitude of a region. Now i have a program which asks for the number of points & based on this number it asks the user to enter that latitude & longitude values which are in the same... (7 Replies)
Discussion started by: reva
7 Replies
5. Shell Programming and Scripting
Hi.,
I am not able to replace the string with another string using gsub fn of awk command.
My code:
awk 'BEGIN gsub(004,IND,004)' p.txt
and my i/p file p.txt is of the format:
av|004|adkf|Kent,004|s
av|005|ssdf|Kd,IT park|s
.
.
.
and my desired o/p should be of : (13 Replies)
Discussion started by: av_vinay
13 Replies
6. Shell Programming and Scripting
Hi,
Requirement: Exporting data from Oracle to UNIX into "Comma" delimiter.
Help Needed: I was able to connect to Oracle and import the data. But please let me know while importing the data I need to make it into Comma delimiter flat file.
For Example:
Source Data -
100 ABC TLead... (6 Replies)
Discussion started by: arunvasu2
6 Replies
7. Shell Programming and Scripting
Hello,
I am having flat file (Comma Delimiter) and the data in the file is as given below.
EMPNO, ENAME, DESIGNATION, SALARY
10979, Arun Kumar, Cosultant, 35000
13555, Bidhu Shekar, Senior Consultant, 45000
15000, Kiran, Kumar, Senior, Consultant, 40000
If... (9 Replies)
Discussion started by: arunvasu2
9 Replies
8. Shell Programming and Scripting
Input file:
<symbol>Q9Y8G1</symbol>
<name>Q9Y8G1_EMENI</name>
<symbol>Q6V953</symbol>
<symbol>Q5B8K1</symbol>
<name>Q6V953_EMENI</name>
<symbol>G1A416</symbol>
<name>G1A416_9FUNG</name>
<symbol>D4N894</symbol>
<name>D4N894_PLEER</name>
<symbol>B0FFU4</symbol>... (13 Replies)
Discussion started by: cpp_beginner
13 Replies
9. Shell Programming and Scripting
Hi,
I wants to print the 9th column information with its path name in some txt file. Here is one line which works fine for me:
rfdir /castor/cern.ch/user/s/sudha/forPooja | grep data | awk '{print "rfio:///castor/cern.ch/user/s/sudha/forPooja/"$9}' > dataFilenames.list
rfdir=="ls -ltr" ... (2 Replies)
Discussion started by: nrjrasaxena
2 Replies
10. Shell Programming and Scripting
We have a csv file as mentioned below and the requirement is to change the date format in file as mentioned below.
Current file (file.csv)
----------------------
empname,date_of_join,dept,date_of_resignation
ram,08/09/2015,sales,21/06/2016
"akash,sahu",08/10/2015,IT,21/07/2016
... (6 Replies)
Discussion started by: gopal.biswal
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)