10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I want to display directory listing in the order of size. I do not have -S option in my version of UNIX. So I wrote a simple script. But it takes "| sort -n -k5,5" part as file names. Any suggestion?
#!/bin/ksh
cmd='ls -l *.TXT | sort -n -k 5,5'
set -x
$cmd
return 0 (7 Replies)
Discussion started by: Soham
7 Replies
2. HP-UX
Accordingly a lot of manuals - if you have block size 8KB and trying to write a 1KB file to the block, as result you waste 7KB of the block space. But recently I noticed about Fragments of File Block. In same case if you have File Block 8KB and Fragment size 1KB - you can save your block space,... (6 Replies)
Discussion started by: jess_t03
6 Replies
3. Shell Programming and Scripting
Hi,
I want to display the file names and the record count for the files in the 2nd column for the files created today.
i have written the below command which is listing the file names. but while piping the above command to the wc -l command
its not working for me.
ls -l... (5 Replies)
Discussion started by: Showdown
5 Replies
4. Shell Programming and Scripting
Greetings everyone.
I have seen that you do wonders here.
I have a large folder on a Ubuntu linux.
Organization main folder, inside 20 000 subfolders, and inside those subolders many other like 5-6 folders and files.
I am interested to create an output to a txt file under the bash... (2 Replies)
Discussion started by: ultimo
2 Replies
5. UNIX for Advanced & Expert Users
Hello,
in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a ... (4 Replies)
Discussion started by: rarino2
4 Replies
6. Shell Programming and Scripting
How can I list the files in a directory and just show the file size, date stamp, timestamp and file name..
I've been trying to ls -lrt the directory to a file and then use the cut command but I'm not having any luck with getting the proper results.. I thought i could use the -f switch and count... (4 Replies)
Discussion started by: Jazmania
4 Replies
7. UNIX for Advanced & Expert Users
I have a directory named Project.I have a control file which contains valid list of files.I would like list the files from directory Project which contains files other than listed in the control file.
Sample control file:
TEST
SEND
SFFFILE
CONTL
The directory contains followign... (15 Replies)
Discussion started by: ukatru
15 Replies
8. UNIX for Dummies Questions & Answers
Hi ,
I want to list all files in the order of size . Just want to know which files occupies more size and which occupies less size .
Is it possible with ls command ? :)
Thanks,
Arun. (1 Reply)
Discussion started by: arunkumar_mca
1 Replies
9. Shell Programming and Scripting
Hi,
I have one file stat.
Stat file contents are as follows: for example.
H50768020040913,00260100,507680,13,0000000643,0000000643,00000,0000
H50769520040808,00260100,507695,13,0000000000,0000000000,00000,0000 H50770620040611,00260100,507706,13,0000000000,0000000000,00000,0000
Now i... (1 Reply)
Discussion started by: davidpreml
1 Replies
10. UNIX for Dummies Questions & Answers
Does any one know how to get a recursive directory listing in long format (showing owner, group, permission etc) without listing the files contained in the directories.
The following command also shows the files but I only want to see the directories.
ls -lrtR * (4 Replies)
Discussion started by: psingh
4 Replies
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)