12-20-2011
Define 'forever'
. Searching from / will take a long time on most systems, particularly if you have some remote filesystems.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am accessing a UNIX server via FTP. I want to retieve a file in a directory. What is the UNIX command that I need to view and retrieve files from a directory? (1 Reply)
Discussion started by: yodaddy
1 Replies
2. UNIX for Dummies Questions & Answers
This is probably very easy but I would like to know a way to list all my files in all my directories that are readable and executable to everyone. I was told to use find or ls and I tried some stuff but couldnt get it to work. I understand that its dangerous to have files with these permissions for... (4 Replies)
Discussion started by: CSGUY
4 Replies
3. Shell Programming and Scripting
I am writing a shell script to search for previous versions of an application...the application is called TAU and basically i want to search the users home directory and /Applications for any instances of a "TAU" folder.. If found i want to give the user the option to remove the old folders and if... (3 Replies)
Discussion started by: meskue
3 Replies
4. UNIX for Dummies Questions & Answers
hello all.
i would like to be able to find the names of all files on a remote machine using ssh.
i only want the names of files, not directories
so far i'm stuck at "du -a | sort -n"
also, is it possible to write them to a file on my machine? i know how to write it to a file on that... (2 Replies)
Discussion started by: user19190989
2 Replies
5. Shell Programming and Scripting
I have directories like V00R01,V00R02,V01R01,V01R02 in a directory
where V is version and R is a release. basically I need to set base directory and current directory. Under a version there can be any number of releases and there can be number of versions also.
V00R01...V00R50..so on
also,... (2 Replies)
Discussion started by: vjasai
2 Replies
6. Shell Programming and Scripting
Hello all,
Here's the deal...I have one directory with many subdirs and files.
What I want to find out is who is keeping old files and directories...say files and dirs that they didn't use since a number of n days, only one level under the initial dir. Output to a file.
A script for... (5 Replies)
Discussion started by: ejianu
5 Replies
7. Shell Programming and Scripting
Hello,
Motive: Search all directories which are older than 5 days.
Example: consider following directory structure:
abc/dir1 abc/dir1/dir abc/dir2 abc/dir3 abc/dir3/temp
Suppose dir1 and dir3 are 5 days older. Then I am looking for a command which lists abc/dir1 and abic/dir3 only so that... (4 Replies)
Discussion started by: mytempid07
4 Replies
8. UNIX for Dummies Questions & Answers
Alright so I've tried a couple different things that at first glance, looked like they worked.
find . -maxdepth 5 -type d -daystart -mtime 1 | xargs du -h Which seems to ignore the previous commands such as depth and modified time.
find .. -maxdepth 2 -type d -daystart -ctime 1 | xargs... (8 Replies)
Discussion started by: Aussiemick
8 Replies
9. Shell Programming and Scripting
Hi All,
I need your help in finding pattern of directories.
need to search for all pattern have "mypatern" from base directory folder.
example
-------
server1 - base directory
100 server1/ab_123456_1/mypattern
100 server1/ab_123456_2/mypattern
200 server1/ab_123457_1/mypattern... (13 Replies)
Discussion started by: lxdorney
13 Replies
10. Shell Programming and Scripting
i need to find a portable way to go through multiple directories to find a file.
I've trid something like this:
find /opt/oracle/diag/*/alert_HH2.log -printordinarily, i can run the ls command and it will find it:
/opt/oracle/diag/*/*/*/*/alert_HH2.log
The problem with this approach is... (3 Replies)
Discussion started by: SkySmart
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)