I try to test the carriage return in a variable.
$ LENGTH=`expr $VARIABLE : ".*"` will return the length of the variable. But this doesn't work if $VARIABLE has zero length.
Any help will be well appreciated.
Thanks in advance.
Giovanni (4 Replies)
I have a file with multiple records in it and want to create a single record by removing all the carriage returns, is there a sed command or another command that will easily allow this to happen.
current layout
813209A
813273C
812272B
expected result
813209A813273C812272B
previously I... (3 Replies)
I have observed with print & echo, they produce carriage return <CR> or newline, after they display string next to them.
Is there anyway to avoide these <CR> after the intended string is displayed? (3 Replies)
Hello .
Now i have a different problem, lost "carriage return" when assigning a variable. The assignation is done in a peculair way but its ok.
The variable "v_tmp" have spaces and carriage return. Its created with v_tmp=`echo $i | awk '.........'`
And the assignation where i lost all the... (6 Replies)
Hi all gurus,
I need help in removing carriage return existed within a record delimited by pipe <|>.
Sample:
A_01|Test1|Testing1|Remarks1
A_02|Test2|Test
ing2|Remarks2
A_03|Test3|Testing3|
Remarks3
Desire output:
A_01|Test1|Testing1|Remarks1
A_02|Test2|Testing2|Remarks2... (10 Replies)
Hey folks,
I've been working on this for some time. Seems simple, but I'm stumped.
I need the following data format:
New_York:Commercial
Geology
Geophysics
Petrophysics
Production_Engineering
Reservoir_Engineering
Pasadena:Commercial
... (5 Replies)
Hello,
How do i usecarriage return in ksh.
I want to do an echo "bla bla" and another echo "bla bla" will appear and replace the first echo on screen.
I tried:
until ; do
echo "bla bla \r"
done
please advice.
Thanks. (3 Replies)
Hello all,
I've a flat file in the following format:
AB\001\CDED\001\ABC\001\nEG\001\HIJF\001\EFG\001\nHI\003\HIUL\003\HIJ\003
And I want to substitute \n with the carriage return. Any help is appreciated!
Regards,
- Seth (8 Replies)
I need to remove the carriage return comes inbetween the record.
Need to have CR only at the end.
I used the below command.
tr -d '\n' < filewithcarriagereturns > filewithoutcarriagereturns
But its removing all the CR and giving one line output.
Input File:
12345
abcdegh... (11 Replies)
Discussion started by: srvn_saru
11 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)
08-18-2011
