Hello,
What are the options to print the contents of a directory in FIFO fashion?
I have searched the forum for something relative to this question and found no answers.
If there is a way please advise, if it has already been answered, please provide a link to the post.
Alternately if... (1 Reply)
Basically to illuminate i want to take a file with mutliple lines,
C:\searching4theseletters.txt
a
b
c
Read this into an array
@ARRAY
and then use this to compare against another file
C:\inputletters.txt
b
o
a
c
n
a (9 Replies)
Hi all
I am searching for a pattern in a file .
The file content is in a single line.If am doing a grep or sed for the a particular pattern am getting whole file.
I want the result in different lines.
attaching the file for reference
search pattern "/xxxxxx/hhhh/tttttttt/sss/" and... (4 Replies)
I'm currently working with dozens of FASTA files, and I'm tired of having to manually change the filename in my Perl script.
I'm trying to write a simple Perl script that'll create a 2-dimensional array containing the name of the folders and its contents.
For example, I would like the output... (6 Replies)
I am creating a report in groff and need to format data from a file into a
table cell.
Sample data:
dador,173323,bpt,jsp,39030013338878,1
dador,173323,brew,jsp,39030013338860,1
dador,173323,brew,jsp,39030013339447,1
dador,173323,brew,jsp,39030013339538,1
I would like to build a table... (12 Replies)
I do have a file with contents splited into multiple lines
ADSLHLJASHGLJSKAGHJJGAJSLGAHLSGHSAKBV
AJHALHALHGLAGLHGBJVFBJVLFDHADAH
GFJAGJAGAJFGAKGAKGFAK
AJHFAGAKAGAGKAKAKGKAGFGJDGDJJDGJDJDFAG
...
...
....
100's of lines
I would like to rearrange the content of this file so it will be a... (1 Reply)
Hi all,
I been looking for a solution to the fact that when I use:
for (i=1; i<=NF; i++) print $ifields that are originally in a single line are printed in a single line
I have severals files for which the first 7 are the same, but the number of variables after that can vary, for example NF... (5 Replies)
Hi there
I have a counter called
my $counter = 0;
I am trying to build an array that will have a name that is for example
my @array0 = ("some", "stuff");
but instead of hard coding the "0" in the array name i want to use whatever value the aforementioned $counter has in it...so
... (1 Reply)
ksh
eg
arrayname=(1 2 3 4 5)
I'm trying to display the individual contents of an array on a new line without using a loop, using one line of code.
output
1
2
3
4
5 (3 Replies)
Discussion started by: squrcles
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)