Hi,
i call my shell like:
my_shell "my project name"
my script:
#!/bin/bash -vx
projectname=$1
sed s/'PROJECT_NAME ='/'PROJECT_NAME = '$projectname/ <test_config_doxy >temp
cp temp test_config_doxy
the following error occurres:
sed s/'PROJECT_NAME ... (2 Replies)
In bash or perl, I would like to know how to substitute a null character (0x00) for every white space without changing the white spaces inside the block of double quotes and the white space immediately following a backslash.
Suppose that sample.txt consists of the following line.
"b 1" c\ 2
... (2 Replies)
Hello experts,
I need to validate a csv file which contains data like this:
Sample.csv
"ABCD","I",23,0,9,,"23/12/2012","OK","Street,State, 91135",0
"ABCD","I",23,0,9,,"23/12/2012","OK","Street,State, 91135",0
I just need to check if all the records contain exactly the number of... (5 Replies)
Hi
I have written a shell script which used sed code below
sed -i 's/'"$Pattern"'/ /g' $FileName
I want to count the length of Pattern and replace it with equal number of spaces in the FileName.
I have used $(#pattern) to get the length but could not understand how to replace... (8 Replies)
Hi Friends,
I looked up online, but couldn't figure out a proper solution.
I have an input file where the columns are separated by multiple spaces and the column content is separated by single space.
For example,
Chr1 hello world unix is fun
In the above example, chr1 is first... (3 Replies)
Hi All,
I have been trying to replace a string using the sed command
string value contain blackslash and double quotes. I am not a expert writer of unix script but do try not to ask question. I have almost given up. Hope you all can give me some suggestion
I want to replace a place string... (6 Replies)
I've got a sed shell script I've been using for quite a while to do batch find/replace operations on .xml files containing various types of text entries. This is the script I use:
#!/bin/bash
while read text_old text_new; do
sed_script+="s/$text_old/$text_new/g;"
done < trans_old_to_new... (9 Replies)
I've a pipe delimited data in a file of size 3GB. if the text data conatins pipe delimiter that will be enclose with double quotes. I have to replace delimiter which exists between double quotes with #%@#%@#%@ using awk or sed. can some one provide a better and efficient solution to me.
The below... (4 Replies)
I need to replace consecutive double quotes in a csv file, the data in the file is enclosed in double quotes but there are some places where the quotes are repeating
Example is below
Incoming data is :
"Pacific Region"|"PNG"|"Jimmy""|""|
Need output as:
"Pacific... (10 Replies)
Hi got this issue and was wondering if someone could please help out ?
var='." "'
echo $var
." "
I 'll get ." " and not ." with 10 spaces in between "
Thanks (3 Replies)
Discussion started by: stinkefisch
3 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)