05-14-2010
Thanks to All.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Folks !!!!!!!!!!!!!!!!!!!
My Requirement is.............
i have a input file:
501,501.chan
502,502.anand
503,503.biji
504,504.raja
505,505.chan
506,506.anand
507,507.chan
and my o/p should be
chan->3
i.e. the word which occurs maximum number of times in a file should be... (5 Replies)
Discussion started by: aajan
5 Replies
2. Shell Programming and Scripting
hello everyone,
I'm trying to learn some scripts but i cant get my head around two of them.
1. how can i write a script that will count the number of times a particular word is used in file?
2. how can i make a script that will take me to a web page from unix?
if anyone could help it... (3 Replies)
Discussion started by: BigTool4u2
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3. UNIX for Dummies Questions & Answers
Hi,
I have gone through may posts and dint find exact solution for my requirement.
I have file which consists below data and same file have lot of other data.
<MAPPING DESCRIPTION ='' ISVALID ='YES' NAME='m_TASK_UPDATE' OBJECTVERSION ='1'>
<MAPPING DESCRIPTION ='' ISVALID ='NO'... (11 Replies)
Discussion started by: tmalik79
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4. UNIX for Dummies Questions & Answers
I'm trying to count the number of times each word in the file exist
for example if the file has:
today I have a lot to write, but I will not go for it. The main thing is that today I am looking for a way to get each word in this file with a word count after it specifying that this word has... (4 Replies)
Discussion started by: shnkool
4 Replies
5. UNIX for Dummies Questions & Answers
Hi
Please can you help how do I count the number of specific characters or words that appear in a file? (8 Replies)
Discussion started by: fretagi
8 Replies
6. Shell Programming and Scripting
hi,
Is it possible to print a particular character n number of times in a line?
for example.
i am print the following line using echo command..
echo "files successfully moved"
i want to count the number of characters that are been displayed. i am doin it using
echo "files... (8 Replies)
Discussion started by: Little
8 Replies
7. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
Develop a shell script that accepts a phrase and counts the number of times that it is repeated in a specific website.
Note: Im not sure if it's the whole website, or just a specific page but im guessing its thewhole website.
... (2 Replies)
Discussion started by: Zakerii
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8. Shell Programming and Scripting
Hello....
Pls help me (and sorry my english) :)
So
I have a file (test.txt) with 1 long line.... for example:
isgc jsfh udgf osff 8462 error iwzr 653 idchisfb isfbisfb sihfjfeb isfhsi gcz eifh
How to print after the "error" word the 2nd 4th 5th and 7th word??
output well be:
653 isfbisfb... (2 Replies)
Discussion started by: marvinandco
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9. Shell Programming and Scripting
Hey All,
I want want to print a string N times the number N before it.
Like i have "20 hello".
so i want to print
hello
hello
hello
.
.
.
.
. 20 times..
Please help me.. I am not able o figure out.. how to do the same? (8 Replies)
Discussion started by: jaituteja
8 Replies
10. Shell Programming and Scripting
Hi,
I have a sample file as shown below, I am looking for sed or any command which prints the complete word only from the input file.
Ex:
$ cat "sample.log"
I am searching for a word which is present in this file
We can do a pattern search using grep but I need to cut only the word which... (1 Reply)
Discussion started by: mohan_kumarcs
1 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)