11-06-2012
Actually, I need to know what the original code is doing, as I have to document (pseudo-code) the process. I know some basics, and can typically work out what is being done, but things like this throw me for a loop!
- Jon
PS - The authors may not have been the best coders, and if it is as simple as you indicate, then someone will modify the code!
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
What is the smartest way to just extract file name from a full path name.
e.g. if I have
/usr/sanjay/bin/file_name.c
I want only file_name.c
Sanjay (2 Replies)
Discussion started by: sanjay92
2 Replies
2. UNIX for Advanced & Expert Users
anyone know if it is possable to extract a subdirectory in a tar file.
IE
tarfile contains
parent dir
-sub dir A
-sub dir B
I want to extract sub dir B. (2 Replies)
Discussion started by: Optimus_P
2 Replies
3. Shell Programming and Scripting
I want to write a code that will look for a particular directory which is full or more than 95% used, and will search older file and delete it. My code looks like this:
df -k|while read f1 f2 f3 f4 f5 f6
do
if expr '$f5' -ge '95%' || continue
then
echo $f5
else
echo "there is no... (2 Replies)
Discussion started by: xramm
2 Replies
4. Shell Programming and Scripting
Im trying to extract a directory from a path entered by the user
Lets say the path is
path=/home/bliss/files/myfile.txt
i wanna extract "/home/bliss/files" from $path ... how can i do this? (4 Replies)
Discussion started by: mrudula009
4 Replies
5. Shell Programming and Scripting
/Path/snowbird9/nrfCompMgrRave1230100920.log.gz:09/20/2010 06:14:51 ERROR Error Message.
/Path/snowbird6/nrfCompMgrRave1220100920.log.gz:09/20/2010 06:14:51 ERROR Error Message.
/Path/snowbird14/nrfCompMgrRave920100920.log.gz:09/20/2010 06:14:51 ERROR Error Message.... (0 Replies)
Discussion started by: Shirisha
0 Replies
6. Shell Programming and Scripting
Hi everyone,
I have different folders which looks like this:
/mnt/ecrm/master/ecrm/templates/brochure/de_DE/zeitlos.ott
/mnt/ecrm/master/ecrm/templates/mail/en_US/default.html
/templates/header_and_footer/en_US/default.txt
I want to get the bold text only in a variable. I already have a... (3 Replies)
Discussion started by: evilass
3 Replies
7. Shell Programming and Scripting
Hi,
Here is my question: suppose I have files like
1990_8xdaily_atmos.nc
1991_8xdaily_atmos.nc
1992_8xdaily_atmos.nc
1993_8xdaily_atmos.nc
1990_daily_atmos.nc
1991_daily_atmos.nc
1992_daily_atmos.nc
1993_daily_atmos.nc
1990_month_atmos.nc
1991_month_atmos.nc
1992_month_atmos.nc... (1 Reply)
Discussion started by: 1988PF
1 Replies
8. Solaris
Hi all,
In Solaris howto extract tar file to specific folder.
This is what we do in Linux, but how to do the same thing in Solaris ?
-tar -xzvf /tmp/etc.tar.bz -C /tmp
(Will extract in /tmp dir)
3.gzip COMPRESSION AND EXTRACTION
-tar -czvf /tmp/etc.tar.bz /etc
-du ... (5 Replies)
Discussion started by: manalisharmabe
5 Replies
9. Shell Programming and Scripting
Hi,
I need to extract a single file from a tar file to another directory.
So far I have this:
This one extract a single file to same directory:
tar -xvf filename.tar ./file.txt
I tried this but its not working
tar -xvf filename.tar /home/dir ./file.txt
or this: (6 Replies)
Discussion started by: erin00
6 Replies
10. UNIX for Dummies Questions & Answers
My input is as below :
/splunk/scrubbed/rebate/IFIND.REBTE.WROC.txt
/splunk/scrubbed/rebate/IFIND.REBTE.WROC.txt
/splunk/scrubbed/loyal/IFIND.HELLO.WROC.txt
/splunk/scrubbed/triumph/ifind.triumph.txt
From the above input I want to extract the file names only .
Basically I want to... (5 Replies)
Discussion started by: IshuGupta
5 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)