In order to prevent the spaces in the new directory being seen as token separators when making the directory you'll have to either quote the new directory name or escape the spaces.
eg:
Though spaces in file paths is a shooting offence @ this site
I have list of files named file_username_051208_025233.log. Here 051208 is the date and 025233 is the time.I have to run thousands of files daily.I want to put all the files depending on the date of running into a date directory.Suppose if we run files today they should put into 05:Dec:08... (3 Replies)
Hi all,
I'd like to create a directory tree, and define from stdin how many levels deep and how many directories in each level should be created.
What I wrote does not work properly:#!/bin/bash
#set -x
read -p " What root directory? " rootDir
&& { /bin/rm -R $rootDir; mkdir $rootDir; } ||... (2 Replies)
Hi All,
As I m very new for Unix, I need to check for a directory and move a file. If Directory is not found, The script should create a directory and move the file. Can any one help here. (7 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Ok i need to create a directory within another directory in one command. I'm already in a directory to. I need to... (6 Replies)
Hi,
If i create a directory like with the command ...
~/.ssh
so where this folder will be get created in side my home directory ...? what (~) represents here..?:confused: (4 Replies)
Hello world,
I just learnt we can create a directory with custom size in a Linux server (say Redhat). Is it true? I'm asking because the only data (I can think of) a directory's inode holds is the files and 'sub-dir's. How can a new empty directory be of some required size? :wall:
PS : In... (2 Replies)
Dear All,
I have a shell scripts which create a directory and perform moving some files, when the script is kept where it is creating directory then it runs fine , but when the scripts is run where it is supposed to be which is different location then where i am creating directory , scripts... (2 Replies)
hello,
is there any command that i can use to create a file and also it directory (if not exist)?
example: <command> /home/admin/testdir/test1.txt
desc: this will create test1.txt under testdir directory. but if testdir is not exist it will be created automatically.
thank you... (3 Replies)
Discussion started by: makan
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)