I've seen several examples of scripts in thise forum about having a script generate a log file. I have a script that is run from cron and that monitors a file system for a specfic filename(s) and then performs some actions on them. Normally I call this script from another script (which the one... (2 Replies)
Hi all,
In the script I am creating a temporary file with process id as temp.txt.$$
I want to remove this tomporary file first from the current directory when i'll run the same script next time.
Note: Every time when the script executes then it has unique process id and it'll create a... (5 Replies)
Dear Friends,
I am beginner in Perl and trying to find the problem in a script. Kindly help me to modify the script. My script is not giving the output for the last field and followed text (LA: Language English). Input file & script as follows:
Input file:
Thu Mar 19 2:34:14 EDT 2009
STC... (3 Replies)
Ok in my bash script i have 5 options to create a simple html script. I need to create a temporary file and whatever the user types will be stored in that file using html codes. And then I have another option in which that temporary file will be moved to the public_html directory in which the user... (19 Replies)
I want remove first line of the file without using any temporary file. Everything should be done in the original file itself since I don't any file creation access whereas I have modify access.
It would be great if somebody help in this regard ASAP .
Thanks in Advance.
Kishore:mad: (1 Reply)
Hi All,
I need help from any of you.Would be so thankful for your help.
I/P
DDDD,1045,161,1557,429,1694,800,1911,1113,2460,1457,2917>
1609,3113,1869,3317,2732,3701,3727,4132,5857,5107>
9004,6496
DDDD,1125,157,1558,429,1694,800,1911,1117,2432,1444,2906>... (2 Replies)
Hi Friends,
I want to convert a csv file into a ordinary .txt file. I am able to convert but I want the output to look as shown below in the .txt file
table findhost=
{
{"xyz","abc"},
{"rxz","mmz"},
{"vrr","nnz"},
}
default={"NONE"}
My current perl script
#!/usr/bin/env perl... (12 Replies)
How would I go about resolving this error
temporary mail message file: No such file or directory
Can anybody tell me where the default location is for the temporary mail message file is for mailx? It appears that it doesn't exist.
Thanks (1 Reply)
How would someone save a file such as /etc/vpnc/test.conf locally into a temp file, so it can be queried? So for example if I used rsync to copy this file locally, how would I add that to a temp_file variable and discard it using unlink?
#include <stdio.h>
#include "error.h"
... (15 Replies)
We have the data looks like below in a log file.
I want to generat files based on the string between two hash(#) symbol like below
Source:
#ext1#test1.tale2 drop
#ext1#test11.tale21 drop
#ext1#test123.tale21 drop
#ext2#test1.tale21 drop
#ext2#test12.tale21 drop
#ext3#test11.tale21 drop... (5 Replies)
Discussion started by: Sanjeev G
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)