Hi Experts,
I have data coming in 4 columns and there are new line characters \n in between the data. I need to remove the new line characters in the middle of the row and keep the \n character at the end of the line.
File is comma (,) seperated.
Eg:
ID,Client ,SNo,Rank
37,Airtel \n... (8 Replies)
I receive a file which is Dos format. When I view the file using vi, I was able to find ^M, ^@ characters in beteen records. I wanted to remove these control/special characters. I used the dos2unix command. This removed the ^M characters. But I am unable to remove the ^@ character. I tried even the... (6 Replies)
I am trying to remove the tab character from a file, which occurs on two places in every line. So far I have tried the following and most are from threads in this forum:
sed -i '' -e 's/ / /' file.dat
sed -i '' -e 's/*/ /' file.dat
sed -i '' -e 's/\t*/ /g' file.dat
sed -i '' -e 's/*//g'... (4 Replies)
Hello,
I need to remove ^L character from a file as below:
HELLO "I "
HELLO "I "
^L HELLO "I"
HELLO "I "
HELLO "I "
Please suggest.
Thanks !!
Please use next time code tags for your code and data (9 Replies)
Hi
When i used :set list in vi , i have seen a lot ^I characters in my file. Could anyone please help me how to remove this characters ?
Issue : When i used awk to combine two file (one of the file has ^I characters) then my output is different than what am expecting, one of column being... (2 Replies)
Good afternoon:
im working wih 2 files to find differences and use the cmp command
cmp file1 file2
file1 file2 are are diifferent char 302 line1
i found what the difference is with the sed command and that is the file1 at the end of every line has a (,) (comma) character.
i.e
sed -n... (4 Replies)
Hi All,
Could any one suggest how to remove $ symbol in a text file when i am opening in vi editor.
Scenario;
For example iam having a file name aaa.txt the data inside the file is like
sample
name
when i am opening in vi editor
The same file resembles like below when i am... (1 Reply)
I would like to delete a particular character (') in file.
I tried this command, but didn't work:
sed 's/'//g' file
My file contains these rows:
'eaa3b0e3f86b97a13f123302e1bc788f9':'FfdrTN\''
'ff368e9fb0982cf91237ef5456297bbb3':'jdcgr$x'
'5b829da203d0e53e49e632572bd9091a':']nzuerG'
... (4 Replies)
I have a file which comes every day and the file data look's as below.
Vi abc.txt
a|b|c|d\n
a|g|h|j\n
Some times we receive the file with only a new line character in the file like
vi abc.txt
\n (8 Replies)
Discussion started by: rak Kundra
8 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)