10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
I need one help to replace particular words in file based on if finds another words in that file .
i.e.
my self is peter@king.
i am staying at north sydney.
we all are peter@king.
How to replace peter to sham if it finds @king in any line of that file.
Please help me... (8 Replies)
Discussion started by: Rajib Podder
8 Replies
2. HP-UX
Hi,
I have created the user 'mastersa' in several servers.
I need to change the user ID to '0'. However, after doing this, I am not able to login (Access denied).
Even after I change the password, I still get this error.
Why is this?
Also, when I attempt to delete the user account, I get... (5 Replies)
Discussion started by: anaigini45
5 Replies
3. Shell Programming and Scripting
tr -cs A-Za-z\' '\n' | tr A-Z a-z | sort | uniq -c | sort -k1,1nr -k2 | sed ${1:-25} < book7.txt
This is not my script, it can be found way back from 1980 but once it worked fine to give me the most used words in a text file.
Now the shell is complaining about an error in sed
sed: -e... (5 Replies)
Discussion started by: 1in10
5 Replies
4. UNIX for Dummies Questions & Answers
Hello,
I would like to change my setting in a file to the setting that user input.
For example, by default it is
ONBOOT=ON
When user key in "YES", it would be
ONBOOT=YES
--------------
This code only adds in the entire user input, but didn't replace it.
How do i go about... (5 Replies)
Discussion started by: malfolozy
5 Replies
5. Shell Programming and Scripting
Hi ,
I need to count the number of errors associated with the two words occurring in the file. It's about counting the occurrences of the word "error" for where is the word "index.js". As such the command should look like. Please kindly help. I was trying: grep "error" log.txt | wc -l (1 Reply)
Discussion started by: jmarx
1 Replies
6. Shell Programming and Scripting
I have a file of names with the following structure
NAME FREQUENCY
NAME NAME FREQUENCY
NAME NAME NAME FREQUENCY
i.e. more than one name is assigned the same frequency. An example will make this clear
SANDHYA DAS 6901
ARATI DAS 6201
KALPANA DAS 4714
GITA DAS 4550
BISWANATH DAS 3949... (4 Replies)
Discussion started by: gimley
4 Replies
7. Shell Programming and Scripting
Dear all,
I am working with names and I have a large file of names in which some words are written together (upto 4 or 5) and their corresponding single forms are also present in the word-list.
An example would make this clear
annamarie
mariechristine
johnsmith
johnjoseph smith
john
smith... (8 Replies)
Discussion started by: gimley
8 Replies
8. Shell Programming and Scripting
I need to write a shell script "cmn" that, given an integer k, print the k most common words in descending order of frequency.
Example Usage:
user@ubuntu:/$ cmn 4 < example.txt :b: (3 Replies)
Discussion started by: mohit_iitk
3 Replies
9. Shell Programming and Scripting
Hello,
I have a complex problem. I have a file in which words have been joined together:
Theboy ranslowly
I want to be able to correctly split the words using a lookup file in which all the words occur:
the
boy
ran
slowly
slow
put
child
ly
The lookup file which is meant for look up... (21 Replies)
Discussion started by: gimley
21 Replies
10. Shell Programming and Scripting
Hi i have a file called search.txt
Which contains text like
Car
Bus
Cat
Dog
Now i have to create a string from the file which should look like
Car,Bus,Cat,Dog
( appending , is essential part) String must be stored in some variable so i can pass it as argument to some other... (5 Replies)
Discussion started by: deepakthaman
5 Replies
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)